A-Body 8 3/4 open gear 741 case

If you're doing a restoration, and you want 4" bolt pattern, that price is not a bargain, but not out-of-line either.

If you're thinking 4.5" bolt pattern, forget about buying an A body rear end. You'll have the right width housing, with the right spring perches, but the axles and brakes will have to be replaced. Instead, consider a C body 8-3/4. Get the housing shortened and cut & respine axles. Call Moser about this before going down that road. There are potential pitfalls.