For sure. And if that number is ever calculated by me, or anyone, we'll post that here.
As a kid, I was interested in stamps for maybe 5 minutes. Too small, having to look at all the details with a magnifying glass etc and I got bored, too. But they are a hobby staple and some of the rarest go for HUGE sums.
And it reminds me of the 1963 Cary Grant-Audrey Hepburn movie, Charade, where rare stamps were the final piece to the puzzle of "where was the money?"
Interesting factoid about the movie: Because Universal Pictures published the movie with an invalid copyright notice, the film entered the public domain in the United States immediately upon its release.