Billy,
one tip would be, as is usually a good practice on EBay/internet, be very careful from whom you buy your receiver. There are many shady, fly-by-night resellers out there and you'll want to make sure you don't get burnt. Both Marantz and HK should list their authorized dealers on their websites.

I'm not saying all unauthorized dealers are untrustworthy, and if you want to save some money, buying through an unauthorized dealer is the way to do it, just be careful. Good luck!

"Chickens don't clap."