Interested parties should do their homework. Many clone 850 Racers are running around, utilizing fiberglass hardtops that were period accessories for the more plentiful Spiders. Important but small details like the "Racer" badges should be in place along with other trim details to authenticate this car as a true Racer.
The opening bid of $12,850 for this car is probably a fair price...however at this point there has been no bids. Perhaps the seller might consider a close offer.
Despite it's "racy" name, these cars are really rather slow and fragile..much like many Fiats of that era. However the unique look provided by the fixed hardtop provide some collector cachet, and if you must go faster there is 40+ years of development available for the motor through many marque specialists.