Accordions wanted

Over the past few years, I've been learning to play the accordion--not particularly skillfully, but it's fun. Now I have an itch to start trying to repair the things.

Since I already have a functional instrument and am simply looking for one or three--preferably piano accordions--to take apart and tinker with, I'm not looking to spend more than $25 or $50 an instrument.

On the flip side, I'm not looking for perfection, either. Scrapes and scratches, missing keys or buttons, holes in the bellows, everything's intact but it makes noise even when you don't press any keys or buttons--not a problem. Basically, if you have an old accordion that's beaten up or busted and you'd like to get a few dollars for it to get it out of the way, I'm interested. After all, I want to see what I can learn to fix!

Also interested in tracking down a Hohner Mignon and/or a SofiaMari Mini Traveler and willing to pay more depending on condition.