I just ordered Radagast from Thailand back in January. Many of the sellers use the same transhippers, so just look on their shipping page and find the one that is closest to you. I uses Jennifer Vivieros noted above. She's in GA and I'm in florida.
The betta cost me $20.00 (with a $5.00 discount), and transhipping cost me $39.50, so my total cost was $59.50. I still can't believe I paid that much for such a little fish! But I absolutely love him. I just could not find the kind of betta I wanted locally or online in the US.
He arrived with some tail damage due to biting, but that isn't something the seller or transhipper can control. It is growing back very healthy, though.
Obviously, only buy from a place that shows pics of the actual fish you'll get. Below are the three places I'd narrowed my choices down to. Bettaakapes actually lets you see a little video of the fish. Very cool. I ended up going with Nice Bettas because I had to have that fish. The seller, Vinita, was very nice and answered all my questions promptly.
Good luck, and let us know what you decide.