Active Digitizer Worshippers: How much would you pay?

For those who keep asking for Apple to build in an active digitizer layer to the iPad: how much would you pay for that functionality?

Note: I am not asking how much you would like to pay, or expect to pay. I'm asking how much you would pay.

EDIT: This is assuming it lives up to your expectations; it comes with a pen you like, it has pressure sensitivity capabilities that pass muster, it's as quick and responsive as you'd expect/hope, and the rest-your-hand-on-the-screen-and-it's-totally-cool rejection is flawless.