OrientVisiter

I travel to China from time to time and each trip I spend a day or two in either Shanghi or Beijing. I like to go to the copy markets and hunt for good deals. I've picked up a half a dozen watches most before I knew what were the popular reps. I don't have a clue yet on how to tell what is a good movement. I always tell them at the copy markets that I want highest quality watches. I have a green bezel SUB which I love. I've also been taken such as my "quartz" Sea Master. I'm trying to learn as much as I can before I go back to the Shanghi market in about two weeks. Sometimes they have to remove fake bottoms in drawers to get to the higher quality watches. Is this a waste of time and money or might I find a great deal once I know what to look for? So far the most I've paid is $30 for a watch.