I guess my question really is, is it worth the risk vs price of buying a new receiver on the bay...
It just depends. Lots of variables.
I just bought a 4310CI on Ebay. But I didn't just pay retail from Jo-Scmo with 0 feedback and no clue.
First, the seller had plenty of 100% feedback.
Second, the price I bid was
way back from retail.
Third, the seller stated he was an authorized Denon dealer, and the product was NIB and A stock.
Fourth, I checked the Denon website and he was, indeed, an authorized dealer.
Fifth, before I left feedback, I went to the Denon website and registered the AVR - just to make sure.
So, If
you do due diligence, it might be worth the risk. It was to me. With freight and insurance, I paid <$1200. So far ... So good.
But that does remind me of the guy who jumped off the Empire State Building. About half way down, someone heard
him say "So far ... so good."