Just this weekend I purchased 2 yes TWO webcams for 25 dollars in a "Cam for me, cam for a friend." Bundle.
Wal-mart is stupid, I'll start with that.
They have these V-3000 webcams selling for 39.96 alone, but on the clearance rack they have the "Cam for me, cam for friend" TWO v-3000 for only 25 dollars.
The 3000 has like. 1.3 Megapixel photos, 640Xsomething video, 30FPS, built in mic, face recognition software and a bunch of other stuff. Check your local wal-mart clearance area in electronics, you could get lucky.
The wal-mart website doesn't have it listed, I checked for you. They only have the 1000 and the 6000 (The 6k is really nice, but 70 bucks each)
GOOD LUCK!