diff --git a/app.py b/app.py
index 4fc7e34..51331f0 100644
--- a/app.py
+++ b/app.py
@@ -261,15 +261,29 @@ def _eurostar_prices_by_row(
                 if service.get("price") is not None
                 else None
             ),
+            "es_standard_status": _eurostar_price_status(
+                service.get("price"), service.get("seats")
+            ),
             "es_plus": (
                 {"price": service.get("plus_price"), "seats": service.get("plus_seats")}
                 if service.get("plus_price") is not None
                 else None
             ),
+            "es_plus_status": _eurostar_price_status(
+                service.get("plus_price"), service.get("plus_seats")
+            ),
         }
     return prices
 
 
+def _eurostar_price_status(price: Any, seats: Any) -> str | None:
+    if price is not None:
+        return None
+    if seats == 0:
+        return "sold_out"
+    return "price_not_returned"
+
+
 def _get_defaults() -> tuple[int, int]:
     return (
         app.config["DEFAULT_MIN_CONNECTION"],
@@ -300,6 +314,9 @@ def _section_trip_fares(section: dict[str, Any]) -> dict[str, Any]:
             if row.get("eurostar_price") is not None
             else None
         )
+        es_std_status = _eurostar_price_status(
+            row.get("eurostar_price"), row.get("eurostar_seats")
+        )
         es_plus = (
             {
                 "price": row["eurostar_plus_price"],
@@ -308,13 +325,18 @@ def _section_trip_fares(section: dict[str, Any]) -> dict[str, Any]:
             if row.get("eurostar_plus_price") is not None
             else None
         )
+        es_plus_status = _eurostar_price_status(
+            row.get("eurostar_plus_price"), row.get("eurostar_plus_seats")
+        )
         trip_fares[row["row_key"]] = {
             "section": section["id"],
             "eurostar_key": row.get("eurostar_key"),
             "advance_key": row.get("depart_bristol") or row.get("depart_paddington"),
             "walkon": walkon,
             "es_standard": es_std,
+            "es_standard_status": es_std_status,
             "es_plus": es_plus,
+            "es_plus_status": es_plus_status,
             "circle_fare": circle_fare,
         }
     return trip_fares
@@ -1268,6 +1290,9 @@ def _results(
                 if row.get("eurostar_price") is not None
                 else None
             )
+            es_std_status = _eurostar_price_status(
+                row.get("eurostar_price"), row.get("eurostar_seats")
+            )
             es_plus = (
                 {
                     "price": row["eurostar_plus_price"],
@@ -1276,6 +1301,9 @@ def _results(
                 if row.get("eurostar_plus_price") is not None
                 else None
             )
+            es_plus_status = _eurostar_price_status(
+                row.get("eurostar_plus_price"), row.get("eurostar_plus_seats")
+            )
             trip_fares[row["row_key"]] = {
                 "section": section["id"],
                 "eurostar_key": row.get("eurostar_key"),
@@ -1283,7 +1311,9 @@ def _results(
                 or row.get("depart_paddington"),
                 "walkon": walkon,
                 "es_standard": es_std,
+                "es_standard_status": es_std_status,
                 "es_plus": es_plus,
+                "es_plus_status": es_plus_status,
                 "circle_fare": circle_fare,
             }
 
diff --git a/templates/results.html b/templates/results.html
index 510b246..7f3da71 100644
--- a/templates/results.html
+++ b/templates/results.html
@@ -148,6 +148,7 @@
     let ADVANCE_STREAM_URLS = {{ advance_stream_urls_json | safe }};
     const TIMETABLE_REFRESH_URL = {{ timetable_refresh_url|tojson }};
     const HAS_PROVISIONAL_TIMETABLE = {{ 'true' if provisional_timetable else 'false' }};
+    let eurostarRefreshPending = HAS_PROVISIONAL_TIMETABLE && !!TIMETABLE_REFRESH_URL && !!window.EventSource;
     let cachedAdvanceFares = ADVANCE_FARES;
     let currentNrClasses = {{ nr_classes_json | safe }};
     let currentEsClasses = {{ es_classes_json | safe }};
@@ -260,11 +261,34 @@
           var row = TRIP_FARES[rowKey];
           if (rowKey !== key && row.eurostar_key !== key) continue;
           if (prices[key].es_standard) row.es_standard = prices[key].es_standard;
+          if (prices[key].es_standard_status !== undefined) row.es_standard_status = prices[key].es_standard_status;
           if (prices[key].es_plus) row.es_plus = prices[key].es_plus;
+          if (prices[key].es_plus_status !== undefined) row.es_plus_status = prices[key].es_plus_status;
         }
       }
     }
 
+    function eurostarMissingText(row, esClass) {
+      var status = esClass === 'standard' ? row.es_standard_status : row.es_plus_status;
+      if (status === 'sold_out') return 'Eurostar sold out';
+      if (status === 'price_not_returned') return 'No Eurostar price returned';
+      return 'No Eurostar price returned';
+    }
+
+    function eurostarMissingTitle(row, esClass) {
+      var status = esClass === 'standard' ? row.es_standard_status : row.es_plus_status;
+      if (status === 'sold_out') return 'Eurostar returned 0 seats at this price for the selected class.';
+      if (status === 'price_not_returned') return 'Eurostar returned this service without a price for the selected class.';
+      return 'Eurostar did not return a price for the selected class. Check eurostar.com.';
+    }
+
+    function eurostarMissingFareHtml(row, esClass) {
+      var status = esClass === 'standard' ? row.es_standard_status : row.es_plus_status;
+      if (eurostarRefreshPending && !status) return '<span class="text-sm text-muted">checking</span>';
+      if (status === 'sold_out') return '<span class="text-sm text-muted">sold out</span>';
+      return '<span class="text-sm text-muted">\u2013</span>';
+    }
+
     function sectionNeedsAdvance(sectionId) {
       var nrClass = currentNrClasses[sectionId] || 'walkon';
       for (var key in TRIP_FARES) {
@@ -401,11 +425,11 @@
         var esStdEl = tr.querySelector('.es-standard');
         var esPlusEl = tr.querySelector('.es-plus');
         if (esStdEl) {
-          esStdEl.innerHTML = '<span class="text-xs text-muted">Std</span> ' + (row.es_standard ? fareHtml(row.es_standard) : '<span class="text-sm text-muted">\u2013</span>');
+          esStdEl.innerHTML = '<span class="text-xs text-muted">Std</span> ' + (row.es_standard ? fareHtml(row.es_standard) : eurostarMissingFareHtml(row, 'standard'));
           esStdEl.classList.toggle('fare-inactive', esClass !== 'standard');
         }
         if (esPlusEl) {
-          esPlusEl.innerHTML = '<span class="text-xs text-muted">SP</span> ' + (row.es_plus ? fareHtml(row.es_plus) : '<span class="text-sm text-muted">\u2013</span>');
+          esPlusEl.innerHTML = '<span class="text-xs text-muted">SP</span> ' + (row.es_plus ? fareHtml(row.es_plus) : eurostarMissingFareHtml(row, 'plus'));
           esPlusEl.classList.toggle('fare-inactive', esClass !== 'plus');
         }
 
@@ -426,8 +450,10 @@
             totalSpan.innerHTML = '';
           } else if (!nrFare) {
             totalSpan.innerHTML = '<span class="text-xs text-muted" title="National Rail fare data is not available for this service">NR fare not available</span>';
+          } else if (eurostarRefreshPending) {
+            totalSpan.innerHTML = '<span class="text-xs text-muted" title="Checking exact Eurostar data for this service">Checking Eurostar price</span>';
           } else {
-            totalSpan.innerHTML = '<span class="text-xs text-muted" title="No Eurostar price found for this service — it may be sold out in the selected class. Check eurostar.com.">No Eurostar price</span>';
+            totalSpan.innerHTML = '<span class="text-xs text-muted" title="' + eurostarMissingTitle(row, esClass) + ' Check eurostar.com.">' + eurostarMissingText(row, esClass) + '</span>';
           }
         }
       });
@@ -620,6 +646,8 @@
 
     function startTimetableRefresh() {
       if (!HAS_PROVISIONAL_TIMETABLE || !TIMETABLE_REFRESH_URL || !window.EventSource) return;
+      eurostarRefreshPending = true;
+      updateDisplay();
       var source = new EventSource(TIMETABLE_REFRESH_URL);
       source.onmessage = function(event) {
         var msg = JSON.parse(event.data);
@@ -633,11 +661,15 @@
           mergeWalkonFares(msg.section, msg.fares);
           updateDisplay();
         } else if (msg.type === 'done' || msg.type === 'error') {
+          eurostarRefreshPending = false;
           source.close();
+          updateDisplay();
         }
       };
       source.onerror = function() {
+        eurostarRefreshPending = false;
         source.close();
+        updateDisplay();
       };
     }
 
diff --git a/templates/results_shell.html b/templates/results_shell.html
index 634994d..b3715c1 100644
--- a/templates/results_shell.html
+++ b/templates/results_shell.html
@@ -148,6 +148,7 @@
     let ADVANCE_STREAM_URLS = {};
     let TIMETABLE_REFRESH_URL = null;
     let HAS_PROVISIONAL_TIMETABLE = false;
+    let eurostarRefreshPending = false;
     let cachedAdvanceFares = null;
     let currentNrClasses = {{ nr_classes_json | safe }};
     let currentEsClasses = {{ es_classes_json | safe }};
@@ -260,11 +261,34 @@
           var row = TRIP_FARES[rowKey];
           if (rowKey !== key && row.eurostar_key !== key) continue;
           if (prices[key].es_standard) row.es_standard = prices[key].es_standard;
+          if (prices[key].es_standard_status !== undefined) row.es_standard_status = prices[key].es_standard_status;
           if (prices[key].es_plus) row.es_plus = prices[key].es_plus;
+          if (prices[key].es_plus_status !== undefined) row.es_plus_status = prices[key].es_plus_status;
         }
       }
     }
 
+    function eurostarMissingText(row, esClass) {
+      var status = esClass === 'standard' ? row.es_standard_status : row.es_plus_status;
+      if (status === 'sold_out') return 'Eurostar sold out';
+      if (status === 'price_not_returned') return 'No Eurostar price returned';
+      return 'No Eurostar price returned';
+    }
+
+    function eurostarMissingTitle(row, esClass) {
+      var status = esClass === 'standard' ? row.es_standard_status : row.es_plus_status;
+      if (status === 'sold_out') return 'Eurostar returned 0 seats at this price for the selected class.';
+      if (status === 'price_not_returned') return 'Eurostar returned this service without a price for the selected class.';
+      return 'Eurostar did not return a price for the selected class. Check eurostar.com.';
+    }
+
+    function eurostarMissingFareHtml(row, esClass) {
+      var status = esClass === 'standard' ? row.es_standard_status : row.es_plus_status;
+      if (eurostarRefreshPending && !status) return '<span class="text-sm text-muted">checking</span>';
+      if (status === 'sold_out') return '<span class="text-sm text-muted">sold out</span>';
+      return '<span class="text-sm text-muted">–</span>';
+    }
+
     function sectionNeedsAdvance(sectionId) {
       var nrClass = currentNrClasses[sectionId] || 'walkon';
       for (var key in TRIP_FARES) {
@@ -401,11 +425,11 @@
         var esStdEl = tr.querySelector('.es-standard');
         var esPlusEl = tr.querySelector('.es-plus');
         if (esStdEl) {
-          esStdEl.innerHTML = '<span class="text-xs text-muted">Std</span> ' + (row.es_standard ? fareHtml(row.es_standard) : '<span class="text-sm text-muted">–</span>');
+          esStdEl.innerHTML = '<span class="text-xs text-muted">Std</span> ' + (row.es_standard ? fareHtml(row.es_standard) : eurostarMissingFareHtml(row, 'standard'));
           esStdEl.classList.toggle('fare-inactive', esClass !== 'standard');
         }
         if (esPlusEl) {
-          esPlusEl.innerHTML = '<span class="text-xs text-muted">SP</span> ' + (row.es_plus ? fareHtml(row.es_plus) : '<span class="text-sm text-muted">–</span>');
+          esPlusEl.innerHTML = '<span class="text-xs text-muted">SP</span> ' + (row.es_plus ? fareHtml(row.es_plus) : eurostarMissingFareHtml(row, 'plus'));
           esPlusEl.classList.toggle('fare-inactive', esClass !== 'plus');
         }
 
@@ -426,8 +450,10 @@
             totalSpan.innerHTML = '';
           } else if (!nrFare) {
             totalSpan.innerHTML = '<span class="text-xs text-muted" title="National Rail fare data is not available for this service">NR fare not available</span>';
+          } else if (eurostarRefreshPending) {
+            totalSpan.innerHTML = '<span class="text-xs text-muted" title="Checking exact Eurostar data for this service">Checking Eurostar price</span>';
           } else {
-            totalSpan.innerHTML = '<span class="text-xs text-muted" title="No Eurostar price found for this service — it may be sold out in the selected class. Check eurostar.com.">No Eurostar price</span>';
+            totalSpan.innerHTML = '<span class="text-xs text-muted" title="' + eurostarMissingTitle(row, esClass) + ' Check eurostar.com.">' + eurostarMissingText(row, esClass) + '</span>';
           }
         }
       });
@@ -618,6 +644,8 @@
 
     function startTimetableRefresh() {
       if (!HAS_PROVISIONAL_TIMETABLE || !TIMETABLE_REFRESH_URL || !window.EventSource) return;
+      eurostarRefreshPending = true;
+      updateDisplay();
       var source = new EventSource(TIMETABLE_REFRESH_URL);
       source.onmessage = function(event) {
         var msg = JSON.parse(event.data);
@@ -631,11 +659,15 @@
           mergeWalkonFares(msg.section, msg.fares);
           updateDisplay();
         } else if (msg.type === 'done' || msg.type === 'error') {
+          eurostarRefreshPending = false;
           source.close();
+          updateDisplay();
         }
       };
       source.onerror = function() {
+        eurostarRefreshPending = false;
         source.close();
+        updateDisplay();
       };
     }
 
@@ -655,6 +687,7 @@
     function finaliseResults(msg) {
       TIMETABLE_REFRESH_URL = msg.timetable_refresh_url || null;
       HAS_PROVISIONAL_TIMETABLE = msg.provisional_timetable || false;
+      eurostarRefreshPending = HAS_PROVISIONAL_TIMETABLE && !!TIMETABLE_REFRESH_URL && !!window.EventSource;
       var summaryEl = document.getElementById('results-summary');
       if (summaryEl && msg.summary_html) summaryEl.innerHTML = msg.summary_html;
       initialiseResultsPage();
diff --git a/tests/test_app.py b/tests/test_app.py
index 9b19b31..b484e8b 100644
--- a/tests/test_app.py
+++ b/tests/test_app.py
@@ -183,9 +183,30 @@ def test_results_can_render_from_weekday_timetable_cache(monkeypatch: Any) -> No
     assert "/api/results_refresh/BRI/paris/2026-06-22" in html
     assert "refreshFullResults()" in html
     assert "window.location.reload()" not in html
+    assert "Checking Eurostar price" in html
     assert "Eurostar prices not yet available" not in html
 
 
+def test_eurostar_price_status_distinguishes_sold_out() -> None:
+    prices = app_module._eurostar_prices_by_row(
+        "outbound",
+        "outbound",
+        [
+            {
+                "depart_st_pancras": "10:01",
+                "price": None,
+                "seats": 0,
+                "plus_price": None,
+                "plus_seats": None,
+            }
+        ],
+    )
+
+    assert prices["outbound:10:01"]["es_standard"] is None
+    assert prices["outbound:10:01"]["es_standard_status"] == "sold_out"
+    assert prices["outbound:10:01"]["es_plus_status"] == "price_not_returned"
+
+
 def test_results_refresh_reloads_when_exact_timetable_differs(monkeypatch: Any) -> None:
     travel_date = "2026-06-22"
     cache: dict[str, Any] = {