Hey Cosmic J,
Well, eBay did not deliver much. I have been going through page after page from the Google search engine and I am not finding much. So far Wikipedia has the only reference to model kits I can find. Plenty of reference to the action figures, etc. But that seems to be about it at this point. I'll keep trying, but I don't think I will be turning up much more.
In case your interested here are all 52 episodes, free for the watching, thanks to Hulu.com:
http://www.hulu.com/search?query=Exosquad&st=1
Brian