I pamper my bettas so, I did a lot of research before buying my first pair--however, the info out there is staggering; it is very confusing and, what one says is right, another says is wrong. Thus, I joined a board so I could get concise and consistent answers. They have been great!
I had all my supplies ready, for my breeding. I bought a 10 gallon grow out for my first spawn (first one is usually small, according to what I read). I also had a 29 gallon eyed, in the event I did overly well. I bought a hang-on double sponge filter for when they grow big enough to move. I bought plastic tubs, looked up the "Thai" way of doing things, and found success in doing it like that.
I also bought nice glass containers at Walmart, for my males, that are 2-3 gallons, but easily placed near each other--I put paper in between the males so they don't flare too much.
My females are in sororities. I also learned that, if you buy a show betta male, make sure you get the same type of female. Good genetics is important--I made a mistake and now have several I probably will never use to spawn. I found 2 breeders on ebay, with 100% feedback and, one actually contacted me, and sold me the female at a very good price. Once I had her, I saw the difference in the ones that I purchased from "other" breeders. She is gorgeous.
Right now, I have my air filters, gages, etc. I just need to buy the sponge filters. I have my first fry now, doing well--but will need a good sponge filter so, I will order off of ebay as, our stores here do not carry them.
My first spawn was about 15-20. I did egg yolk and bbs first..but now switched to microworms.
This is just to show you the expense, and I am not even a seasoned breeder yet. I pamper them with live foods (flightless fruit flies), as well as Hakari frozen foods--mosquito larvae and bloodworms, which is all they want to eat. I do not use nets--I hand scoop them out, carefully. I use a turkey baster, daily to remove waste, and added ghost shrimp and snails to help with the clean up. I also have moss balls and will be ordering some more live plants.
So far, the expense is about 450.00 but, many of the things I purchased will save me from purchasing more--like my biological filters, that I got on sale and will be used for more grow out tanks.
One thing I will say is that, had I not joined this board, I would have spent thousands and, probably not had a successful spawn either. They are very helpful here. :)