The rich buyer trick is present in every other movie. It's still works. Why?

Because the number of people who are both capable and willing to buy this stuff is very small. Consequently, if you want to turn these into liquid money in a short timeframe (months), once you sell what you can to your handful of billionaire buddies you don't really have a choice but to deal with some people you don't actually know personally.

Because there are only three kinds of baits

sex

greed

fear

For a while there I read "Ark"