Its like a opiate high but a little mellower and clearer.
http://www.bouncingbearbotanicals.com/
I like the red-vien borneo, and its easiest to order the powder. You can get 114 grams for ~ $30 shipped and a single dose will be between 3 and 20 grams or so (you build a tolerance really quickly, but it goes away again equally quickly).