This is a awesome website! And its free. You earn coins by filling out your profile, sharing with friends & completing reviews. Then you use the coins to purchase samples of your choice. I've already "bought" several items.
OPI Drying Drops
Napoleon Perdis Lip gloss x 3
Raw Color Brush Set
They are still in beta mode so there are some glitches to the site.
My personal refferal link
You have to request a invitation to join.