In my opinion it depends on who your comparing them to... for the power your getting, many reputable amp manufacturers would be around the same price if not higher, with the old A A/B technology.

M80s VP180 4xM22ow 4xM3ic EP600 2xEP350
AnthemAVM60 Outlaw7700 EmoA500 Epson5040UB FluanceRT85