I would really hope people stop suggesting using fast tech. They are located in China which can lead to issues such as customs holds, your purchase generally taking forever to reach you and also consider if you ever need to return an item. Unless you live in China (or rather close) this is a waste. buy as local as possible. Preferably in the same country. If you are buying in bulk, that's 1 thing. Other than that it makes no sense. Ultimately do what works for you (people in general) I wouldn't suggest it though. All other advice has been pretty solid.
So you're saying I should go to my local B&M to buy my clone rda and pay $30+ dollars for the same item that the B&M bought from FastTech for $10...
I keep the extra and buy more atty's....