If money is tight, take a look at [link=http://www.spadtothebone.com/SPAD/PQHor/]this[/link] or maybe [link=http://www.spadtothebone.com/misc/spa3dt.htm]this[/link] and then there is [link=http://www.spadtothebone.com/SPAD/SPA3D/]this[/link] one too.

All of them can be built for under $20 and it will be the best money you'll ever spend. I've built all of them and I don't even fly my other planes anymore.

Hope this helps,