We love this idea — access to designer-ready digits without having to shell out $30 for a single polish? Genius. We've rarely, if ever, used an entire bottle of polish in our lives — usually we get halfway down and they start getting all tacky and hard to use, so we just chuck them. This gives you the opportunity to try the latest shades, without the commitment or the hefty price tag. And, for those of you germaphobes worried about shared polish being unsanitary, remember that the polishes you use at the nail salon are just that: communal, meaning lots of other people have used them. Not to mention the fact that nail polish manufacturers have to make sure that their lacquers are safe despite how many people are using them, meaning that polish is not a cesspool of icky bacteria, thank you very much.