The prices are really good most of the…
The prices are really good most of the time, BUT if anything goes wrong you are in trouble. I received some LiPo batteries that where so low on voltage that my charging device refused to load them. The customer service told me to load them anyway, that is really, really dangerous. After weeks and a lot of contacts they finally replaced the batteries. I would not buy anything really expensive, but I buy a lot of smaller things, like microcontrollers, all sorts of electronic equipment and such. If you know the risk you can make a real bargain.