One of the most popular models out there is the Logitech C270, which makes sense given how large Logitech is in this market. The model is currently ready to be shipped and, while prices are above $200, they are currently down in the $80 range.
The Weicha 1080P HD microphone Webcam is in stock for $54.99 if you want a good upgrade to a 1080p model and don’t care about the Logitech brand, because they have all been on par anyway in the past several days. You can also get the Web camera for $48.99 Full HD Webcam now and it will almost be delivered as fast.
Finally, if you’d like to invest as little as possible, you can collect a Joupugi 720p HD USB Webcam for just $32.99 right now. It will take a little longer for you to ship, but if you order soon it should still arrive next week.