Call up your local Snap-on or Mac dealer. They are a the ones taking the old boxes in on trade, so they have the used boxes.

Got a Snap-on top and mid box (from the Mac dealer, no less) for $450. That was about half the cost of new.

Yes, it was double the price of a new Craftsman, but four times the box. I've had it for almost 20 years.

About 5-10 years ago, I picked up a small Snap-on rollaway for $100. When I first saw it, I thought that it looked like it fell off a truck. In fact, it had. It had dents all over it, but it functions perfectly (looks like hell). Best $100 rollaway I could have gotten.

Steve