Sure, they offer low prices, but they sell crap. When you try to return it, they give you RMA instructions but never send a shipping label. They tell you they did, but they lie about it. If you charged something, cancel if possible. If it's not to much money, get an RMA and ship it back yourself. You can write it off or call your credit card company and place the charge in dispute.
DO NOT TAKE A "CREDIT" OR BUY ANYTHING ELSE!