Right now the site just shows National Rail (NR) walk on fares in Standard Class and Eurostar Standard prices.

I'd like to see more prices, specifically:

Eurostar Plus
National Rail Standard advance tickets
National Rail First class advance tickets

Optionally we could include First class walk on fares, although they'll be expensive, I wouldn't never buy one.

Our existing Eurostar scraper is already getting the Eurostar Plus prices, we could have a way to make them appear in the UI.

Getting NR advanced fares is more tricky, we need to scrape the GWR booking system, it'll take multiple requests. We shouldn't get this price data by default. We could have a button to get the extra GWR prices then for each NR service show standard walk on, standard advance and 1st class advance prices.

Not sure what to do about total price column, lots of combinations now. Maybe selectors so the user can pick which type of ticket they want for NR plus the type for Eurostar.

I hope that makes some sense, can you have a go implementing. Ask me if I've left anything out.