Yeah, nowadays the chinese companies are selling servos, and everything else, for a lot
cheaper than everyone else. Also, those same brackets are available from Lynxmotion
in the US.
The other thing is, you need to power the servos from a separate supply, and not from
the 5V pin on the Arduino board power header. It cannot supply enough current for
servos [maybe for 1 servo if you're lucky, but still not the best idea].