Give Bens loans in renton a call, last time i was down there they had atleast 12 used .22, maybe more and some new ones, i know some of the used were under 100. If you are into a project idea, pick up a used .22 that might have a beatup stock and refinish it with the help of your boy's, a great project that can be done in a weekend and it can also help them appereciate and take care of the gun..
I have bought .22's for as little as $20.00 that just needed some love..