You know approximately how much a dremel with that basic sanding wheel costs?
http://www.walmart.com/ip/Dremel-100-N-6-120V-Single-Speed-Rotary-Tool/15173789
$29.99+tax. The basic dremel (100 model) comes with the little grindy wheel thing.
Off brands are usually cheaper. But Dremels are forever. lol.
That is a great model, I've had mine for years without a single problem
Mine is going on 5 years. I bought a 200 model a year ago though. The variable speed is nice sometimes.
Lol, thinking about that... if you (the OP) are in the prescott area before you buy one somewhere, I'll give you my 100 with the grinding wheel for $15. lol.