I have seen so many people burned with that site because they belived too much in the überawesome deal. They were wrong. One friend baught a 321 that was according to the seller in pristine condition, then when he recieved he contacted me, the dial of teh watch had nearly no lume , the hands were wrong and the movment was not so clean. He made an estimate and had for nearly 1000euros of service. Another thing happened to a friend who baught a vintage connie the movment had fake parts. A worst thing happened not on the bay but to someone who baught his watch in a so called professionnal vintage watch shop. The owner of that shop is young, not a wtahcmaker and far to be an expert despite he is a member of the union of the watchmaker and experts of France. This person baught a chronostop and the watch systematically lose -45sec per day. This person went back to this shop while the watch was under warranty and ask for the better regulation, but the regulation went worse it went too fast +1mn per day. Then this person went to my watchmaker who settled his watch to perfect precision and no more problems.
Even in vintage/new watch shops, you have people who have zero knowledge about watches and often they are not watchmakers that is why it is highly advised to avoid them.Ebay or not Ebay, always chose carefully the shop who sells the watch and the same is for watchmaker. Good watchmaker are scarce these days.