I tend to ignore the dollar bills that I have. They either stay in my junk drawer or go towards some sort of unhealthy food in one of our vending machine here at the station.
But after seeing this I decided to pay more attention to my dolla dolla dolla bills y'all.
CoolSerialNumbers.com published an article involving a list of serial numbers on dollar bills that people are willing to pay lots of dough for.
Here's are some of the serial numbers:
7 of the same numbers in a row like 48888888
7 of the same number 88881888
Weird Radars like 10000001, 011111110, or 500000005.
Double quads like 44449999
Good luck, and hopefully you'll be able to earn some money.