I recently purchased a Canon Digital Camera SD100 online. It was really simple, here are some links which others may find useful.
Site to check prices:
Pricegrabber.com
Cnet-Shopper
Pricewatch.com
some of these sites have reviews too, the end customer reviewers very quite helpful and accurate.
Happy Shopping 🙂
Were you able to use CHKD on this camera?
If so, what version?