I think Gene is selling his Audyssey XT32 standalone unit.
Dirac is offering a free trial to consumers, so some people are trying that out. I think
@PENG is thinking about doing that free trial. Dirac may be offering discounts too, at least to manufacturers, since a lot of people are converting over to Dirac.
But when you can get a Denon X3000 series with Audyssey XT32 on sale for $550-$600 or the X4000 series on sale for $799, might as well just buy the whole AVR.