Audiozen,
I was also impressed with all the customer reviews on Class D Audio amps. You're right - higher prices don't equate to better sound. I need to keep reminding myself of this and not fall into big manufacturers' marketing traps.
I have a friend who used to be a dealer. I was astonished to learn that speakers usually have a 50% dealer markup and most other audio gear have a markup of up to 40%. So basically, customers are paying for the dealer to operate a business. I guess this is what happens when you have a middleman. So I wonder how much a $5,000 amp is really worth after you figure in expenses for marketing, advertising, employees, dealers, and so forth. It seems like most people pay a price for a recognized brand name.
Anyway, I've also been looking for a good class D amp besides ICE. I guess we're in the same boat. Did you look into the Hypex NCore technology? It seems like the responses have been very favorable. I can't afford the retail version, but there's a DIY version. I have a strong feeling that I'll probably just buy an assembled Class D Audio amp. Yes, do let me know how it goes if you purchase one.