Hi, I found two used Canon SX220 HS in my city. First one is about 60 $ with battery and charger. Second one is about 30 $ wihout battery and charger. I'll use this camera for document scanning mostly (My older post about interval time shooting for document scanning is here) with CHDK (Intervolameter) but I've some worries. What are your suggestions? Is this camera has any problem specifically? Will it be enough for my scannings and taking casual photos? What should I consult to seller before I buy? I heard something like shutter count for used cameras. Should I ask its shutter count? Or is this kind of camera has shutter counter? Is there anything that I must check between used and new for this model? I guess I asked too much. Thanks a lot.