actually, im not gonna do your homework for you like the guy above did.
Howardforums
Craigslist
Crackberry Marketplace forum
i personally recommend using a forums marketplace to buy used equipment. i know who and where its coming from per se. downside is you need to be a contributing member in order to post/PM sellers.
also, FYI, as a new member with one post, learn to read the forums rules and regulations. your thread title "hello" is too non descriptive. part of the forum rules are that you need to make thread titles as descriptive as possible, in order for people to get a clear idea of what you are posting about.
I am not going to delete this thread, since there is a transaction in process, but I am going to close it since selling outside the marketplace is not permitted. The original question was allowable, but not negotiations.