Which type of webcam to buy for skype v. 4.1.20 on Ubuntu v. 12.10?

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http://askubuntu.com – I got a laptop (core 2 duo, 2 GB ram) without a webcam and using Ubuntu v. 12.10 OS. As I wish to make skype video calls with my Family I wish to buy a webcam. My budget is low, so I can't spent a lot on it. As I haven't found any webcam suggestions for the Ubuntu 12.10 OS, but only for earlier OS versions, could you suggest me a webcam type(s) that I could use for skype v. Regards Endre (HowTos)