My m1200 has served me well, but I've graduated from school and I really don't need tablet functionality anymore. My tablet is about a year and a half old, but is still in perfect working order (digitizer is fine, no dead pixels, etc).
I have all the original CDs, documentation, etc. I would sell with the tablet, 2 pens, the stand, EXTRA BATTERY, charger, plastic cover, usb keyboard. mine is the 20gb, 866MHz, 802.11b, with 512Mb ram.
I honestly have no idea how much to sell for, so if you're interested, make me an offer. I can provide pictures if necessary. Drop me a line, firstname.lastname@example.org