Are you selling or buying one or just asking a question, as having an answer to this question could lead to a better response to your posting. IMHO the FWB Sport is not hard to find in condition as described (or better), but if one just wants a shooter "comparable alternatives" are available these days for around the low £200s (if you don't mind a strip down and sort out etc).

As a collector, and FMHPOV as a buyer, I'd not want to pay more than than £250 for a fantastic example and £100 for a dog rough one if in fwo order and complete.

IMHO the postings that give you best responses to your question are those where the responders talk about putting their money on the counter rather than "hyping up the market".

JMHO, Vic Thompson.