I agree, but the R-S500 is $50 less than the A-S500. It's about the same price as the A-S300! I still don't get it.

Why not buy the receiver, don't use the tuner and save $50? My guess is that they make a lot more receivers than integrated amps, so the cost per unit is lower. But, we're talking 2 channel stuff in a 5.1 world, so they probably don't make a lot of either(comparatively). Just seems strange to me to pay more and get less(when everything else is equal).