I bought a gently used 40d camera from nicksan. This is my first marketplace transaction. Nick was kind enough to trust me even though 1) I haven't bought through here before, and 2) I had just joined the forum 2 days prior. All risks considered, he accepted.
As a first time buyer, I have to admit that I was a bit nervous too, but the transaction was flawless.
I have to give kudos to Nick for doing such a good job packaging... he even took the time to remove any fingerprints from the LCD and everything was in MINT condition upon arrival -- I'd swear it was new, papers and all!
Nick was prompt with the tracking number and went out of his way to get it shipped the very next morning.
In summary, Nick really cares about the buyer, and he does a great job packing and keeping his equipment clean and like new. I couldn't ask for a better transaction.