I believe the only place to get it is at Sephora, and only in store if it's a flagship, or larger store. I bought mine online as the Sephora here in VA is smaller than my living room. The link is for the set of 3 for $30 which I purchased, but you can buy them individually for $16 each.
1.) ALWAYS start with a base coat. This protects your nails as well as creates a smooth surface for your manicure. I go back and forth between two, Deborah Lippman Rehydrating Basecoat and Nail Magic Nail Treatment.
I highly recommend this nail polish, it's just as fun to apply as it is to look at!
Stop by My Vickilicious Life and Fabulous but Evil to see the other Nail Files Link-ups, you know I will!