Mattel caved and offered buyers a replacement Barbie who thought math was fun. Smart shoppers, almost no one turned in their old Barbie for the sterilized version. Those Barbies are now big collectors items and sell for over $1,000. Mattel made 100,000 of them before they were pulled.![](https://encrypted-tbn1.gstatic.com/images?q=tbn:ANd9GcRjJnmU8-wQxBdUuwHuSg6X6L5NPVdQuoN0IB6uQMppIaJ1hQ0FUw)
Similar situation with those old scale models of Billy Carter's Chevy pick-up as well as empty cans of Billy Beer. The few times I've seen them at auto swap meets, they get top dollar for them.