Was it shipped through UPS? They have a default of $100 insurance coverage in each shipment. I'd go after then if that is the case.
You might still be able to sell the parts remaining of that A4000 for about what you paid.
Motherboard
PS
HD Floppy(I got like $79 for my spare.)
motherboard(working.) w/RAM
Daughtercard
etc.
Or look around for a dead A4000 and pull the case top, keyboard and pick up a 3640 for cheap. Then you'll save one more of the old girls from becoming parts.
-Nyle