Originally posted by coomarlin
A $90 budget does not leave you many options. I'd look into building a spad debonare from coroplast.
in case you haven't heard of the SPAD before (though you will if you spend significant time in this forum), here's a link to help you out:
http://www.spadtothebone.com/SPAD/
The SPAD concept created simple, durable, economical aircraft, to reduce the costs associated with this hobby, and to speed up the building process when pilots fly combat.