Which store will you recommand ?
I can only recommend the one i dealt with which is F-C who has shown to deliver reproducible quality, they also seem to only focus on two frames (the blurred out Pinarello TT frame and the Factor) soon to be the v2 Factor. Whereas Taiwan Eisen is selling every single high end frame copy, I'd trust the store/reseller who focuses on one specific thing over the one saying they can perfectly produce you a Colnago fake, Madone fake, SL8's etc.
After seeing the interior of the other frame in here there is definitely not just 1 factory pumping all these Ostro V1's out, they are very different quality interiors.