I have this receiver and it's well worth the price. I also tried to add to my cart with no luck, and from every nearby store. Seems like a glitch in the system or something. Might be wise just to go to the store yourself.
Game Room>LG 60" Plasma, Onkyo HT-RC560, Paradigm mini monitors fronts, CC370 center, ADP-170 surrounds, JBL Loft40 FH, RBH I-12/e, I-12 and dual SVS PC12-NSD subs. Living Room>Samsung 59" Plasma, Yamaha Aventage RX-A740 receiver, Primus P363 fronts, P163 center, Polk RC60i in-wall rears, dual SVS PB12-NSD subs. PC set up> Onkyo TX-NR509 receiver, , Infinity P143's, Polk PSW505 sub. Master Bedroom>Samsung 42" LED, Yamaha RX-V377 Denon 5 spkr set, Mirage LF-150 sub . Game Systems> PS4. PS3, XBox One, XBox 360, Wii.