Note, be sure to apply your promo code during the 'Payment & Review' under the "Have a promo code?" section.
Editor's Notes & Price Research
The RX-V681 7.2-Channel System offers seven amplified channels with dual sub-woofer connection; 90W per channel. Fully loaded w/ WiFi, AirPlay and Spotify Connect. Great A/V receiver for your home entertainment. Offer valid while promotion last - Discombobulated
Update: Apparently only in store at this point from WWS
Never used World Wide before, so I can't comment there, but they seem okay per BBB (A+). However, if you're willing to pay a bit more, Amazon also has it for $399.99, which CCC says is low for this unit. Free shipping and tax for everybody that has a state tax now, I guess.
Here's a review from CNET for reference.