I just ran across this on Ebay. It is a small O'scope that fits in a shirt pocket with not too bad of specs. I think it would be about $65 in U.S. dollars.
http://www.ebay.com/itm/ARM-DSO-Nan...ps=63&clkid=1775337278553971286&_qi=RTM839986
http://www.ebay.com/itm/ARM-DSO-Nan...ps=63&clkid=1775337278553971286&_qi=RTM839986