Does anybody here own one of these cameras, or know anything about them? I'm looking at a used advertisement for it, (doesn't say what year) and it's going up for $795 including all accessories that came with it, an extra battery and a charger, and 128 MB flash card, and the camera is 6.3 MP. Is that a good deal? Would you suggest not buying used? I take pictures of action sports, and pretty well everything else.