I wouldn't give you $20 for the whole lot. That is just crazy pricing. I could never get that lucky selling swill.
These 12 number variations are pretty rare and it has been my observation that they show up 1 or 2 times a year if that. Some of them show up much less, and I believe the quacker & breadcrust show up a bit more frequently. The JM21 might show up every 2 to 3 years. I think that may be as tough if not more so than Ratz & cracked Animals. For people trying to put together a complete diecut set, the bidding can get pretty competitive.
With that said, I wouldn't jump through hoops to get them in such crappy condition, and if I did have them as placeholders, I'd be looking to upgrade.
Here are the 12 number variations for anyone interested:
2 Duzn't
5 Chock Full of Nuts and Bolts
6 Grave Train
15 Skimpy
18 Quacker Oats
21 Jolly Mean Giant
21 Maddie Boy
23 6 Up
32 Weakies
37 Breadcrust
38 Cracked Jerk
43 Maddie Boy