If its a good price and its a Dremel, I say go for it.
I personally, however, hate the battery powered Dremels. I use the top of the line 400 XPR w/ 5000-35000rpm which is awesome.
But the MULTIpro is good for just general, non heavy use. Don't expect to be about to cut huge things with it and it have still have a charge. But my experience with the battery powered ones is with a REALLY old Dremel the I eventually got angry at a smashed finally.