Fran,
I'm no technical wizard. Just love model trains! I also can see and appreciate the efforts that go into bringing these products to market. I am pretty sure there will be a wide spectrum of opinion largely based on the size of people's wallets.. But since you have asked here's my pennies worth.
Personally i would pay for a 4 car set from you somewhere in the region of £450-£500 RRP for a 'sound fitted' all singing and dancing high quality model, which I know it would be from you guys. I guess a DCC Ready version of the same model, I would perhaps pitch at £350-£400 rrp. My thinking is perhaps £90-£100 per vehicle and obviously the extra premium for each vehicle on a sound fitted version (£20-£25)
Again, I must stress, thats based on what I can afford and what I would be happy to pay. Im sure many would wince at that price, but its just my opinion and personal circumstances.
Looking at the blue box manufacturer, who I do also admire, but their current RRPs of £550-£650 for an EMU 4 car set, really are eye watering...
Perhaps Accurascale should dip their toe into the DMU or EMU 2 car/3 car pool first just to test the waters on commercial viability....