You've got to love competition (and a strong $AUD).
Gamma now has the QHY9 listed for $3,000 which brings it close to the ST8300 and well below the new Orion cameras.
According to the website, the Colour version of the QHY9 (expected soon) is also expected to list below $2,000!?!? Typo??? http://web.aanet.com.au/~gama/QHY9%20prices.html
If the $2000 is correct for the colour camera then perhaps the $3000 for the mono camera includes filter wheel and filters as stated on the website:
"New model cameras being released in December, with great pricing.
Cameras like the new QHY-9 Color, and package deals for the QHY-9 Mono (Includes filter wheel and filters)."