The FED 7 Prototype is a Soviet 35mm camera that never reached series production, surviving only in a small number of pre-production examples from the FED works in Kharkiv. As a prototype rather than a catalogued production model, it sits firmly in the specialist collector category rather than the user-camera market.

Auction data for this model is extremely thin: a single UK hammer result of £1,200 in 2004 is the only verified saleroom reference, so any current price guidance is indicative rather than statistical. Prototypes of this type tend to be highly condition- and provenance-sensitive at auction, and what a FED 7 Prototype is worth today depends almost entirely on documentation and which specialist sale it appears in.