The link points to the Denon AVR-1803 receiver - which is last-years model. The newer 1804 has been released and includes more features, which should be worth taking a look at. I'll also agree with ghetto, the shipping from most Yahoo! store vendors usually kills most deals. Also, the AVR-1803 sold for about the same price over the past several months. But, one needs to keep in mind - Denon is very strict on their warranty. They only provide warranty service if you purchased the receiver through an authorized source - *most* on-line vendors don't fall into the "authorized" category.
See Denon's Web site for a list of authorized vendors. I'd go with 6th. Ave., too.