HD collections tend to stay quite pricey. Rockstar games as well.
And also some of the more popular Xbox 1 games. I was in a shop yesterday and saw Marvel Vs Capcom 2 for Xbox for £20 which is insane given that it doesn't really run on 360 and the XBLA version is £8 or so (I think).
Stranger still, Marvel Rise of the Imperfects was still £10. That game didn't even get good reviews.