I would like some thoughts on this topic too.
The market for repeating air pistols seems to be either CO2 revolvers disguised as semi-auto firearms, CO2 replica revolvers, semi-auto bb guns, or bolt action guns with a rotary magazine.
The only new-to-buy 'self' repeating pistols I can think of are the Baikal MP-651k and the new Artemis CP400, both of which are non-replica revolvers. (I have excluded the 5-shot match pistols for £1500!).
I want to be wrong about this as I would really like to have a decent choice of air pistols I can blast away with and not have to keep re-cocking....