Review (5/5): Excellent value!
For the price, this can't be beat. I've used the Emjoi (which costs six times as much), and the results are basically the same. This may not be quite as powerful, but (in my opinion) the savings more than compensate. It's fast, easy, painless... and kind of fun in some weird way.
Added bonus, it also works as a toenail file. I hit my big toe on something the other day and cracked/split the corner of my nail in an odd way (a big square piece broke off). Instead of trying to cut or clip it, I used this and filed until the edges were smooth. Took only a few seconds, and even saved my pedicure!
I say don't overspend and give this a try!