If looks aren't a factor (meaning you dont care if it's all white), you can buy some monokote trim sheet for about $5. These have an adhesive back so they just stick on. How well? that I don't know. But from the damage you might be able to get away with it. This is a poor man's fix. The covering probably won't be tight which could effect the flying.

$20iron, $11 roll of monokote. Iron will last your forever (hopefully) and a roll will last you a few fixes.