You're misssing a point here Elwood. You're comparing the WK-7500 to a PROFESSIONAL workstation based on price and features.

First thing.., the 7500 "is not" a pro model. It's a "semi-pro" model.

Second thing.., WELCOME TO THE UNFORTUNATE AND VERY UNBALANCED WORLD OF ARRANGER KEYBOARD PRICES. Do you for any second think that it's ONLY Casio that would produce an arranger keyboard whos features DO NOT match that of a pro synth..., yet it sells for a price that makes it look like a rip off compared to a synth/workstation?

Take your own example.., you mentioned the Korg M3 (which is a VERY nice workstation) by the way. Have a look at another keyboard (the PSR-S910) that sells for damn near the price of the Korg M3. The S910 is no where near the quality of the M3.., yet look how close the price is. That's just the world of arranger keyboard pricing Elwood. It ain't changing anytime soon.

This is how it has been for YEARS. Plus there has NOT been any confirmed prices for the United States yet. I wouldn't start bitching about a US conversion you got from a UK website before the official prices have even been released yet.