No, they charge more because they don't have the luxury of asking £1K-odd for a laptop that's not worth anywhere near that.
I expect Apple will cite this as a reason it's "better" than Vista/7, when in practice they're saving you £50 so they can ask £500 more on the hardware side.
What you tend to find with Apple is that in the lower tiers of hardware (MacBook, MacBook Pro 13", Mac mini, iMac) the price is fairly close to a PC of equivelent spec. It's when you reach MacBook Pros and the Mac Pro that prices tend to skyrocket.
More than the price, the biggest issue is that they funnel you into your computer choice. Not them existing to serve your computing choice. Already have a good monitor? Mac mini or Mac Pro. Want a 17" laptop? £1,849 goes bye-bye.
As for the original topic, loads of people in Mac forums were like "Wow, MS suck, go Apple!" and the like. Snow Leopard is pretty much:
Delete PPC code
Recompile apps for 64bit and stress-test
*Actual* additions (rewritten Finder, GCD, OpenCL, Quicktime X)
Sprinkles on top
It's somewhere between a Service Pack and a new OS. So it's actually priced perfectly.