Went to Jammy's last week and was very shocked at the price increase over the last 2 years..... If you know what you are looking for you can get the exact same quality for 1/4 the price in shanghai or shenzen. If you would like a top quality "replica" it is now over 440 US dollars while just 2 years ago it was only 190 for the exact same product. Jammy is charging 440 US for a Rolex GMT2.. Just as comparison.. Bought the same in Shenzen for 100... With that being said Jammy provides excellent continuity of service. I have bought 4 watches from him but none recently because of the high price.
The biggest issue I've had with all of his watches is the band. I have returned watches to him for repair 3 time for this issue and one time for the mechanism not worknig. Only had problems with 2 of the 4 watches, so with my record you run a 50% chance of a return for repair (which he will do by mail BTW).
Maybe too much info, but 2 things to take out of it. He is very trustworthy and will do any repair or replace (even by mail). Second is that his price no longer is that what we expect of a "fake" copy..