Now the prices are a bit steep, $10 for one. But right now you can get them free with free shipping!
I happened to be browsing through Sneakpeeq (referral) which is an amazing site all on its own and they are having Lex nail polishes on sale! If you use my link you also get a $10 credit making the nail polish of your choice free!
They have already sold out on several colors so get them as fast as you can.