Where are the a bodies going

I'm a little late to this thread. There are FB groups where cars are put up for sale that never end up on Marketplace.

As for having multiple A-bodies. We have two (four if you count what my sons have, but they are grown and gone - even though one of the cars is here and the other will probably be back here when I get my new garage finished so that I can finish the car for him). Our two are among the more desirable ('68 GTS convertible and '67 Barracuda convertible). Our sons cars are '67 Barracuda fastback (ex-drag car, needs to be built again) and '67 Dart GT convertible (heavily modified with all factory parts). None of them were expensive, but all needed some work. Our two were drivers when we bought them.

There's stuff out there and your budget is good for a good car, but good cars require persistence and being the first to answer the ad.