welcome.
I hope you stay i while!
the trusted dealers i usually buy from is ;
http://www.1-pc8838.com/index.php joshua, perfect clones
http://www.ttw168.com/ andrew, Trusty time
http://www.puretime.co/ angus, Pure time
this post is somewhat contraproductive, as you really should browse this forum and read up ALOT about different models/versions/general information and choose your dealer. there even is a trade section here in the forum. - 2nd hand watches.
ps: there are other great trusted dealers on this forum, but as i have no 1st hand experience with them, i only list the ones ive dealt with.
Use the search-function (top right corner of the page). Every possible question you might have regarding your first buy have been answered before.
cheers
Miagi