music~maker
Shohin
I have to say here that those who want to make bonsai cheaply are really spitting into the wind. Bonsai may not be the most expensive hobby in the world, but it does require that you spend some money. I know that's hard on kids and just-out-of-school adults, but that's the way it is.
Cheap tree, plus cheap pot equals I-don't-want-to-look-at-it bonsai. And I know, I know, it is all a "learning experience." But I just don't know what you can really learn.
With bonsai, you generally invest money or time. In my experience, you can learn an awful lot from just chopping up nursery stock and watching it re-grow. You can spend years learning how to reduce material and hardly spend any money at all.
Do you learn/accomplish more by starting with better materials? Maybe, but I don't think learning only happens with fancy pots & expensive stock. There's a lot that can be learned from just a seedling and the ground. Some of my biggest bonsai epiphanies have come from watching a $20 juniper procumbens grow out over 4-5 years.