Could I also add that if your aim is to join the 501st (as is mine when I finish my snowtrooper) check with someone if you are planning on buying a complete stormtrooper from anyone.
I am not sure but I seem to think that the complete stormtrooper from that store needs work before it is 501st acceptable.
You will find this hobby addictive, I now have a complete snowtrooper in bits, I am collecting tie pilot parts, not got many more to get now until that one is complete, I have most of a tusken raider built and I am also collecting fett parts for an ESB fett.
Good luck
Craig