Problem is there ain't really any place/company that makes buttons ONLY. Usually they come in a complete shell package, and yeah I hated that too. If you're considering buying the whole shell, then
coolmods.co.uk is a good place. Oh and btw, Welcome to Acidmods!
, enjoy your stay, and trust me mate, if you got a question (even if it sounds very dumb), then ask it and all the other honored members including myself at AM will do their best to find your answer
.
Edit- Alright just re-read the post to be sure. I know that there are shells for the DS called Ghost shells. They are completly clear, and they cost anywhere from 18-25$ USD w/shipping (depending on where you got them). I think I remember getting mine from
dealextreme.com, but I'm not too sure. If I was you, I'd try checking that site first, as they sell alot of cheap accesories for the DS and the Wii.