@zachwiej For cheap servo's you should check out DealExtreme.com, and just search on eBay ;).
@mowcius yeah, got 3 Parallax RFID readers. I bought them a few monts ago in New York (while on holiday) at RadioShack.
I was planning on buying only one (for the price on the box: $30), but somehow they were on sale so I bought 3 for $10 each. Great deal ;).