Not sure if it helps, but I’ve noticed that LNER have seemingly stopped making advances available on their one a day Hull services (0700 from Hull, 1718 from KGX) Mon-Thurs. for example, looking at next week, a single on either of these trains Mon-Fri is coming up at £149.70 which is the any permitted anytime single. On Friday, advances are available and the price drops to £47.20!
If I travel on Monday to London on the 0700 and return to Hull on the 1718 there is no return fare available so it’s two anytime singles and a whopping £299.40. First class, where advances are available, is an eye watering £451.20 for two first class advances. The same journey on Friday would be £94.40 in standard (2 advance singles) and £146.40 in first, also 2 advance singles.
For comparison, a fully flexible anytime return with Hull Trains is £185 standard and £300 first class, and advances are still available on every HT service next week. Using Monday again as an example, I could take the 0626 to London and the 1548 (both peak time trains) return for £151.50 std (2 advances) or £206 in first (2advances).
Hard to argue that LNER are not a rip off when HT peak time fares are 50% less on the same day.