I myself have played many a record under £50. Firm believer that along with rarer stuff throw in some cheapies and then at least there's some there the punters can afford if they don't know and wish to buy. At least half my last set were under £50.
Played Carl Carlton for a while, £80 Butch has or had these at £20 or £30, and thats recently cause I put someone onto a copy he had. Have seen Geni for around £60 in recent times so wouldn't have thought £75 too ridiculous and as for Gene Chandler, we've been there already