I have fond memories of the mail order oddities that were in the back of comic books as a kid. Sea Monkeys, mini hot air balloons, electric motors, and so on. Companies like Edmund Scientific. Patiently waited "4 to 6 weeks" many times.
I waited by that mailbox for weeks. My mom finally told me I was robbed of $4.75.
It was a learning experience. I still think about the person who set out to dupe kids.