I had purchased a Pen/Tablet combo a while back, I might posted here not sure.  It cost me $109 Canadian and it required a special thinner than AAA battery to fit inside the pen.

I never got to use it, since I was working on a project out of Chicago and Pogo (one of my dogs) decided in protest of me leaving him to pull down the tablet off the computer desk via usb cable and chew it out.

Now fast forward a year or more, I bought my Wacom Grapphire 4x5 which was packaged with Pen/Mouse and came with a 1 year extra warranty with it from a tigerdirect.com store locally for $149 Canadian.

One of the reason I didnt purchase a Grapphire a few years ago was the price.  It was just too expensive.

Now I can finaly make use of  a tablet and pen doing graphics.  There have been too many times where I've cursed at my mouse while doing work inside photoshop.