Charitable awareness: Pick ups prices?

Its seems harder and harder to find a bargain on the small villages around the outskirts of the town I live in, the game left in the picture is street fighter alpha 3 is probably more sort after then it is rare and £15 could be a fair price if the game was sat in game station on the retro shelf,
but in an AGE UK Charity shop for that price?I sometimes feel good about myself when the games I find Games come from a Charity shop,
but really who is going to pay that much for a game in a thrift store. Its not just tat shops that Is having a price hike,
In grainger games they have a cabinet full of over priced games stuff like digimon rumble area at £14 and final fantasy IX for £19 I mean really your a retail store not eBay, I think the only game that was on the money was Zelda twilight princess for £22. With retro stuff on a retail level becoming rarer places like GAME CEX not carrying ps1 and alot of places phasing out ps2 software maybe retro in the future will be slim pickings.