I am not sure what to think about the first reply here, it seemed a little rude to me, but then maybe that is just me. Your response was well tamed, I salute you.
Still, I concur with the basic facts presented. There is one excellent solution I'll suggest at the end of my post.
I am certainly a fan of buying captive bred, and it is as was indicated much easier to find an established breeding pair from someone who for whatever reason isn't going to keep them.
But when was the last time you heard that. Finding a breeding pair of BC fish is wicked rare; finding someone with a breeding pair that wants to let go of them is almost impossible. Just check the posts on RC of people looking for them. I was looking for two years and just got mine Saturday.
There used to be a breeders as I recall, in the US who would sell you a pair of mated, proven breeders for around 150$ plus of minus, plus shipping. You could also get just "mated pairs" for a bit less. But I called a few months ago and they don't have them.
I am afraid it won't be easy for you either way. I heard recently that the Banggai situation is real bad. I was told the following:
1) many importers have simply stopped carrying the BC because the mortality to market is 99% or higher. Economically they just can't afford to carry a fish that won't live long enough to get to market.
2) wild caught (WC) are still afflicted with some malady (assumed or maybe even known to be parasitic in nature). As a result many of the fish the live long enough to sell die within the first 3 months in the home tank. This is what happened to me a year back. I killed six before I called it quites.
3) the BC is on its way to the Endangered Species list because it is so overfished
4) CITES is considering making the BC the first fish to be put on some special "banned" fish list (forgot the actual name of the list). Not sure what kind of legal power they have but if I recall correctly it was implied that they could and would halt all trading of the species through this act.
So, your options look like this I think:
1) buy a bunch and try to make your own from WC fishes. Doing the 10 in a tank trick, is risky. You will pay 150$ or more to buy 10 fish that likely have some parasite problem and will be dead in 3 months anyway when you could have spent the 150$ on a pair and 3 months later had babies.
2) buy a pair if you can find the outfit that was breeding them, for the 150$ or whatever the price is, assuming the are "back in" now.
3) put out the word in your local reef club you are looking for pair and see if anyone has them. Then try to sweet talk them into selling or trading (good luck).
But here is the best solution. Although those of us with breeding pairs like that we have breeding pairs, we don't alway raise the fry. Sometimes we need a break. It is very likely that although you don't have a pair of fish yourself, you can get someone who does, to give you their fry and you can raise them. This is afterall what most of us are really after right? the chance to raise fry. This is how I got my first set of BC fish. I raised someone elses fry. I learned a lot from my first attempt (0 survived) and on the second attempt managed to get 3 babies to live (so far at month 3 and eating cyclopeeze and hikari mysis). Looks like I'll get a pair from this three too (cool) which I will be giving away to someone in my reef club so they can try their hand a breeding.
I would suggest that you let the doner of fry get involved too, by showing them setup plans, feeding schedules, planning together etc. Its just like building a business partnership, co-operation, communcation, and joint exercises create long term realtionships you can both exploit. Once you find someone willing, you will likely get fry many times to try and raise, especially if you succeed. And if they should want to raise their own again, you would be first on their list to get a pair that they raise.
So my best advice is to put out the word that you are looking to raise the fry from someone local who has a breeing pair. Do this in RC and in your local reef club (you are a member of your local reef club right? best thing I ever did in reefing was to join my local club). Be prepared to drive some distance to pick up fry, and make sure you are ready to feed BBS at least twice a day, three of four times would be better.
Good luck, Kevin
It's pretty obvious you have no experience pairing bangaiis or you wouldn't be asking. Sure you can let the lfs toss two together and if they don't rip at each others throats they might be a pair. Of course they might simply be two females or just two males who just don't give a damn. The only simple and "low budget" way is to to buy an established pair from some local reef club member breaking down an established tank. Outside of that you will need to buy several adults and place them in a 40+ galon tank. In time the pair will make itselfe quite evident. 
I should have apologized, sometimes I come off sounding differently than I intended. 
