MPB.com is incredible! I highly recommend them to anyone looking to purchase good used camera equipment. Their prices are extremely reasonable and the listings are very clear about the condition of the equipment. I never have any worries when I buy from them - I always get exactly what I expect. I've bought both lenses and camera bodies, at a fraction of the price I could find elsewhere, without any of the fears that I'll be getting a lemon. Plus, with my most recent purchase, they went out of their way to make sure my package would arrive on time. Thank you! :) (As a side note, I am completely surprised by all the negative reviews here. I have had nothing but great experiences with these guys and have become a solid MPB.com fan.)