I dont know if anyone knows the answer to this, but I'm really curious and thought I'd ask. I've noticed that many third party sellers on Amazon list brand new items under the used category. It will be listed as used, but the description says brand new - never opened. I see this so often I suspect there must be a specific reason behind it. There was even a lens I was interested in buying and it was listed as Used- Like new, but when I e-mailed the seller they said it was brand new. Anyone know why so many sellers do this?