Reading between the lines on this thread it would appear that Goran/Gox has or had a licence from someone to produce only twenty mono type cars from the original factory drawings, whether that licence provider is Ford or someone further down the GT40 design rights chain is a matter that could be debated forever.
Costs & other related matters aside , they appear to be well built and look the part from pics I have seen. Given that the 20 have apparently just about if not all been spoken for only time will tell if these have been a good investment. At the moment given the price some other replicas are reaching @ auction the depreciation is similar to the average road car.
BUT at the end of the day they are still a replica, albeit a very good one. You pays your money & you get/got what you hopefully wanted!
Keep it for 30 years & pass it on to your grandkids along with a recipe for some synthetic fuel replacement & they might be able to make a $$ out of the car!!