Not sure if want , might be fun to have one or two run off of my Raspberry PI, but the drivers might be windows only.

Yes, it can be used with a raspberry pi set up. Might grab one just to try it out and use that fancy affiliate link

If you're looking for a cheap miner just for fun, I would go for the Antminer U2 such as this one : http://www.amazon.com/BITMAIN-ANTMINER-U2-Bitcoin-Overclockable/dp/B00ITD5NV6/ref=sr_1_1?s=electronics&ie=UTF8&qid=1418098493&sr=1-1&keywords=antminer+U2 . They can go up to 2.4Gh/s, which is more than 5 times the 336Mh/s than the one you found for only twice the price. This is what I use and it's pretty neat. I'm sure you can find them for a few bucks cheaper if you shop around.