Halo cigs has a couple of sample packs that are decent. Halocigs.com
Also Avail has a 5 for 25 on their site. 5 10ml bottles of your choice. Availvapor.com
I vape both, they're not bad. But I will tell you that the high end juices don't really do sample size (five pawns, etc). For those you're gonna have to trade or get PIFed.