because not everyone can afford 1000$ for a 12 inch wacom cintiq.
the computer shop i work for is selling large quantities of Refurbished HP tc4400 tabletPC's. this is quite a deal, starting at 200$. we are located in Bristol, CT. we do ship within the U.S. here are some facts/details for those interested-
Processor: Intel® Core™ Duo Processor T2500 (2M Cache, 2.00 GHz, 667 MHz FSB) UPGRADEABLE TO: Intel® Core™2 Duo Processor T5600 (2M Cache, 1.83 GHz, 667 MHz FSB)
Chipset: Mobile Intel® 945GM Express Memory: 1024 MB 667 MHz DDR2 SDRAM, system max: 4GB (2x2GB) Hard drive: 80 GB 5400 rpm SATA (some may have 100 or 120 gb, this will be mostly luck of the draw however.) Operating System: Windows XP tablet edition. if you have windows 7 it does handle win7. [this is windows XP sp3 with some additional tabletPC features, all implemented in vista and 7 by default.] Display size: 12.1-inch diagonal XGA wide viewing angle Graphics card: Intel Graphics Media Accelerator 950 Drawing tablet: integrated Wacom Penabled pressure sensitive digitizer. Slots/ports: 3 USB 2.0, 1 docking connector, 1 headphone/line-out, 1 microphone in, 1 infrared port, 1 battery connector, 1 AC power, 1 external VGA monitor, 1 RJ-11, 1 RJ-45, 1 S-video, 1 Type I/II PC Card slot, 1 secure digital
Communication features Network: 10/100/1000 NIC ethernet Modem: 56K modem Wireless: Intel 802.11a/b/g Bluetooth: intel widcomm integrated module with bluetooth 2.0 wireless technology
HP tc4400- base price - $200 t5600 dual core 1833mhz upgrade - $25 (it's worth it. if you plan on running photoshop CS5 you'll probably need it)
second battery attaches to the underside of the unit for extended battery life - $20 (not all of them got new primary batteries, so.. TRUST ME, GET THIS O_O)
laptop bag (i'll be honest, they're used laptop bags, but they're in decent shape and fit the tablet nicely) - $20
(customer pays shipping, this can vary based on location.)
my notes on this system: i use it with 2GB ram, windows XP tablet edition, and a t7200 processor. it handles adobe photoshop CS5 under these conditions. the 3d-acceleration is pretty junk, but being a graphic design tablet, it is pretty good with 2d acceleration. if you plan on using this for only drawing, it's just fine. its not meant for gaming, but it can handle some games okay. it loves the project64 n64 emulator. it will run second life but not very well.
bottom line: its like a wacom cintiq and a laptop combined, for about 1/4 the price of a new cintiq.