I can definitely vouch for this gentleman. He and I made a deal on a Nikon D3X and his handling of the transaction was impeccable. He won't sell you a bill of goods on this lens, he has just learned that he needed a different lens.
He's a good guy and will gladly discuss anything with you.
He's a trustworthy, straight-talking guy and certainly I would do business with him again in a heartbeat!