Sunfire dropped the 5 channel amp this year and is only doing 7 channel amps. Makes sense since this is the trend of home theaters now as well as some blu-ray tracks that will have dedicated sound to the additional 2 channels.
Retail on the TGR-401 (AVR) is $4,000
Retail on the TGP-401 (pre-amp) is $3,500
Retail on the TGA-7401 (7 x 400w amp) is $4,450
Retail on the TGA-7201 (7 x 200w amp) is $3,250