Moonshadow: you can't go wrong with Chard...he's great to work with and his fish are beautiful!
Vizja13: everyone's taste is different and for most of us betta lover's taste seems to change everyday. Keeping that in mind, there is absolutely nothing wrong with buying Thai bettas....they are just not the "all that!" they are sometimes purported to be...and just 1 year ago, they were the only ones I could find from the breeder, so that's where I started and I got some NICE bettas to breed.
Again, keeping all this in mind, there is absolutely nothing wrong with buying from a more local breeder...if you have facebook, I hear that quite a few breeders sell their "nice" quality bettas are selling them on facebook and the like.....this leaves the "ok" and less for aquabid....which, again, is fine as long as you know this and, (you should be doing this no matter where they come from!) Look over the betta very strigently...making sure you're getting the absolute best fish for your money!
Now, once again, keeping in mind all the things I've said: are these the best blue/yellow bicolors out there? No! Their caudal fins are wonky, a bit short for their spreads, their fins are spiny not sharp/smooth like HMs should be. His anal fin is too long, so is hers and both their anal fins have a much more noticeably darker tint than all other fins...which is normal to some extent, but shouldn't be blarinly obvious. The top lines of these fish are malformed, crooked in one case.
My suggestion is to keep looking because you could do way better. If you are interested in looking to see what's available locally, check out: bettascapes.com or get in touch withRachel and Alex (from bettascapes) through this forum (you'd be amazed at how many IBC members/breeders frequent this site!). Alex has a thread "My bettas for sale" and his avatar name is Polukoff (sp??). I recently purchased some beautiful blue/purple/yellow bi and tricolors from Alex and Rachel to breed with my recently acquired Aquastar71 MG HM BF male (everyone calls them MG/Mustard Gas but that name is trade marked and misleading as there is no blue/purple in original MG bettas.