OK, there's two main ad systems on cameralabs:
Google and Pricegrabber. The Google ads normally occupy a square in the top right corner of many of our pages, and are always text links. The Pricegrabber ads are usually alongside a photo of the camera and show a number of shops with their logos. Also look at the bottom of the advert - it'll say google or pricegrabber, so you know the difference.
Google places ads based on your location, so what you see may be different to someone else. Unfortunately we have no control over the ads which google displays - this is the same for all sites which use google ads. So sometimes you may see an ad for a company which isn't as reputable as others. Once again, this affects every site which uses google ads, not just cameralabs.
So I think you are seeing this shop advertised on the google ad in the top right corner of the page.
Pricegrabber tries to work with reputable stores only, so the ones you see listed should be absolutely fine. And remember, for our most trusted stores, visit our partner stores page
When shopping for a camera, I'd suggest checking its price at one of our partner stores first as this is the kind of price you should be paying from a reputable store. If you're seeing it advertised any cheaper, beware.
As the others have said, you can also check out a shop's reputation at www.resellerratings.com
and see what others are saying about it. If the price looks too good, then please check them out before buying.