FREE diaper coupon codes. Some cloth diaper stores, like Kelly's Closet offer them a lot of the time.
Enter giveaways. Not only is winning fun, but it is a great way to try out some new diapers that may very well become your favorites!
Buy used. Ask questions about them. There are diaper swapper groups, b/s/t groups for many brands, Craigslist, and garage sales.
Find loaner programs.
Start small. You don't have to jump into it full time.
Use flats or prefolds and covers. You could build a decent stash for cheap using prefolds or flats and covers. You could also make your own from old receiving blankets.
Rent them. Usually only the case for newborn diapers, but this is a great option for many people.
A friend just gives them to you. It could happen!
Building a cloth diaper stash doesn't have to burden your bank account. I hope these options really help you to jump on board the cloth diaper train!