3dXtreme has made a roundup of a few Logitech Quick Cams :
The Quick Cam Zoom , the Quick Cam Pro 4000 and the ClickSmart 310 :
All three of these camera's are worth the selling price. First off, the Quick Cam Pro 4000 is one of the best quick cams you can buy with its excellent features and great quality. The Quick Cam Zoom is for the average user who wants the best price / performance web cam out there. The ClickSmart 310 while not being a top of the line camera due to there being no flash or zoom, would be a great cheap idea for kids since there are no memory cards to lose and is quite durable.
As for the pricing, $99.95 would be the most you would pay for the Pro 4000 and $79.95 for the Zoom as shown on Logitech's American website. While the Pro 4000 is nicely priced for me, I would like to see the Zoom a bit cheaper so it can appeal to the middle range crowd better. While the ClickSmart 310 is shown as $79.95, that can be found way lower as up here in Canada, I have seen it locally for around $69.97 Canadian Funds which would be around $45.00 US. Thats cheap for an easy, take everywhere camera isn't that bad