Old Cast Iron Mickey Mouse Race Cars

I bought these a few months ago at a yard sale. They are cast iron and weigh about 2 pounds each.  They have very little rust or paint loss as you can see in the pictures. All 4 wheels on both cars turn freely.   I have seen them sell from anywhere from $50-$100 on ebay but the ones I have seen haven't been in such good condition like the ones I have.