I highly suggest you join. Even for someone who doesn't breed its amazing to have access to all the articles, etc. I just joined a couple days ago and I've just been reading and reading. For anyone who is interested in these fish on a level higher than "they make nice pets" it is a fabulous asset.
For adults its only $20 a year.. that is $1.67 a month, 0.05 cents a day. It is NOT that much money.
I really think any breeder who wants to be taken seriously should join, not so they can say "oh I'm an IBC member so I'm awesome" but simply because a breeder who is serious enough to join the IBC and learn how to breed good fish is a good breeder in my book.