Lots of such fellas on Mudah, that's why I go with the buy-the-seller principle. I have also flipped some 60+ watches, so I have had seen some of these scammers too. Most of the time, they would go with the :
1) Overseas or outstation purchase and funds already transferred (with some kind of receipt), and need you to send over immediately due to (insert whatsoever reason here). Counter : Unless I am comfortable with the buyer (check out references, etc), I would wait until the funds clear before courier.
2) Offer was so good that seller wants you to pay a deposit or in full, prior to checking out the watch. Counter : Ask for the current time and date pictures of said watch. Normally, they would back off when you require so as they would only have a couple of pictures lifted off the Net.
3) Good price but only has watch, no box or papers. Counter : Ask to deal at the authorised SC for verification purposes at my own cost. They would back off if they have a fake on hand. Certain brands are easier to tell- for instance, Rolex and Omega would be pretty evident once the caseback was off, and there has not been a fake Ball with the real Ball-renown tritium tubes.
Wherever possible, I would prefer to deal by COD within KL area, or at my housing estate if it involves anything more than RM10k. The way I reason, my place was well-known for its security and the buyer/seller would have to register first at the guard house (so I could retrieve any such details if something went wrong) and the other party also know my address so they could see that I am a genuine party.
As for this Ram chap, he has been operating under various guises but same phone no. and used to sell Seiko watches on the cheap (you could expect no delivery after payment) before moving up to Rolex recently. Quite a known party if you go through the Seiko forum, but there are still people who would get conned by him.