Buying from a 1 feedback ebay seller in a foreign country, you are asking to be burned. I read somewhere that 70 % of the Swiss watches out there are fake. I recently bought what was supposed to be a genuine, a model that I could not find any rep's of, and it had a cheep aftermarket band, not as good a quality as most of the rep bands on here. This was from an online dealer that advertises a lot, including on RWS. Another big online advertiser for gens, if you do a feedback search online, they are a nightmare and I think they are selling rep's also. Just a feeling mind you but what if years later you paid $4-15,000 for a rep you thought was a gen?
Caveat emptor.