As far as aquabid goes yes I frequent the site and drool,but I personally can't afford a betta from thailand. Perhaps if bettas had a longer life span than maybe I'd be more willing to spend $55 on a fish from there. As already stated it's like ebay or any place you take a risk with,there are great breeders,and horrible ones.
I will mention that I have purchased bettas from a breeder in the U.S. his name on there is 84elmo2001. For some reason he also goes by M1247m. His name is Roy and I was very impressed with him. I spent like $42 for 3 bettas. A white opaque female with mint green sheen to her, a yellow delta tail male,and a red spade tail(which seemed too huge to be female,but had the ovipositor) He package the fish up wonderfully,they were all healthy,and made it here alive. He even threw in a free spade tail female. He was prompt on responding to my e-mails. I was impressed!