http://www.kratomcaps.com/
I'm not sure if this is the best deal out there; I paid 27 bucks for about 113 pills/56 grams/2 ounces, which is about 4 and a half good doses, or three good doses and one
really good dose.
It feels kind of like if you took that topical anesthetic the dentist puts on your gums before shooting you up with Novocaine and somehow distributed it through your entire body. It feels like that stuff just as it's starting to take effect or wear off. It's also got a stimulant effect, but it's harder to notice under the sedative feeling.
This guy describes the downer feeling like a mild opiate, so I guess it's kind of like baby's first speedball. If I had a few drinks on top of this it'd be perfect.
I wouldn't be afraid to buy it as just powder or shredded leaves, either; I opened a cap and just ate the plant matter inside, and it tasted like if you ripped open a bag of Earl Gray and sucked on it. So, the tea would probably be pretty good.