If you can find a good local source then why buy over the net. Saying that i have for the last 4 years used 3 or 4 internet sources and never had a problem. Yes you can get scammed but most sources realise that we guys talk via these chat rooms and there are many many of them ,some that allow open talk about sources ug labs etc and they could get a bad reputation very quickly. If you do choose to order just send a small order first and see what turns up.Definately stay away if someone emails you offering gear.