I would not rush to judgement. I have bought really nice watches from a Japanese dealer on eBay who describes himself as a wholesaler, and usually has over 6000 watches on his site. Maybe he acts as a broker, but his despatch response to a purchase is so fast that he must have them in stock rather than getting them from a third party. I have been very happy with every single purchase, both from a quality and value point of view.
The only downside is that he will not negotiate: prices are take it or leave it, but that's fine with me when I know exactly what I am getting for the money.