questionsrobotics starters kit for around $25?

vote-for1vote-against
vote-for5vote-against

I don't think you can touch something like this for anywhere near $25. Lego used to have some fun things (they probably still do), and those are well over $100. Maybe you'll get lucky later, and @catbertthegreat will wander by, and have other ideas.

I'd try this search first:

http://lmgtfy.com/?q=roomba+modifications

vote-for3vote-against

There is nothing out there to my knowledge that costs $25 dollars. Be ready to spend at least over $100 if not more. Some products to get you started.

Here is the Lego Mindstorms platform: http://mindstorms.lego.com/en-us/products/default.aspx

The MAKE store's robotic section: http://www.makershed.com/SearchResults.asp?Cat=46

vote-for4vote-against

@catbertthegreat: thanks a lot, I was looking for something like that makershed.