Mail.order mystery

A mail-order mystery! That sounds like a fun and intriguing topic. Here are a few possible directions we could take this:

1. Mystery of the missing package: You order a package from a mail-order company, but it never arrives. You try to track it down, but it seems to have vanished into thin air. What could have happened to it?
2. The mysterious catalog: You receive a catalog from a company you've never heard of, and it seems to be tailored specifically to your interests. But how did they know what you like? And what's the catch?
3. The fake online store: You order something from an online store, but when you try to contact them, you realize it's a fake. How did they manage to scam so many people, and what can you do to get your money back?
4. The mystery of the overpriced item: You order something from a mail-order company, but when it arrives, you realize it's way overpriced. How did they manage to charge you so much, and what can you do to get a refund?
5. The mystery of the strange product: You order something from a mail-order company, but when it arrives, it's not what you expected. It's a strange, unusual product that you're not sure what to do with. How did they manage to sell something so unusual, and what's the story behind it?

Which of these directions sounds most intriguing to you? Or do you have a different idea for a mail-order mystery?