I searched on Google for cheap tickets and Trainline claims they are cheaper and you "save 61% when you book in advance so I booked a ticket from Gatwick to London Blackfriar for £23, but later when I checked Thameslink the same ticket was £10! It was when I checked the prices for tickets from London to East Anglia and Trainline offered a ticket for £413.63 (!) I realized I been had. Going direct to Greater Anglia the same ticket was £34 I understood Trainline is a total scam. The cheapest offer from Trainline for a return ticket was £186 which I booked from Greater Anglia for £65. To make matters worse I tried to get a refund but Trainline keeps an "administrative fee" so it's not worth trying to get a refund unless we are talking substantial money. Whatever you do; avoid Trainline and save ýourself a bundle!