If you're in the USA, then it's very easy to get your hands on Wyeast 1388. It's available from a number of online retailers including Amazon as well as directly from Wyeast. If you're worried about getting raped on the cost, then just have enough honey to make three 5 gallon batches one after another. That's how I do it. I put one bag into the bucket with the first batch, then once primary is done I throw the second batch right on top of the first one. Then once the second one is done, I wash the yeast, and throw that entire "super starter" (not really but almost) into the third batch. I don't take it farther than three generations. If you look at the yeast bank instructions loveofrose put up, you can buy one pouch and have an almost endless supply of yeast. I'm too lazy/stupid/drunk to do that, but those that do seem to like it.