I got this free for doing a review on my blog, by the way. This is great for taking care of your feet at home. The device is rechargeable & it can be used while it is charging. My feet were in rough shape because I don't get regular pedicures. This worked really well even the very first time (when my feet were at their worse). It works better every time since I have been taking care of my feet in between treatments about every 3 or 4 days. It's pricey, but I think it's probably comparable to similar items. It's not tricky to use & it came with 2 grinding heads. Another good thing is that it's really compact. I leave mine in the box & it fits in one of my bathroom drawers. The cost works out to around 3 salon pedicures in my town, so I don't think that it's too expensive for something that I will be able to use so much without leaving the house.