It's a bit pricey but it's worth every penny. This is the best nail file I have ever owned. I've had several other crystal nail files in the past and eventually the filling surface smoothens and is not as effective. The surface of the Leighton Denny file does not deteriorate. I've had mine now for 3 months and it works just the same as it was when I purchased it. The manufacturer also give a life time warranty if it does smoothen which is reassuring. Highly recommended.