In any western movie, the bounty hunter is paid his money on the spot, amounting to hundreds to thousands of dollars. That was a lot of money, and I have a hard time believing that the small town sheriff had that amount of cash on hand to pay. Is it a realistic representation of the time or just a movie trope?
Reference: "For a few dollars more" Guy Callowy, $1,000 for murder. El Indio, $10,000. A wagon full of dead bad guys, $27,000.
"Django unchained": In other words marshall, you owe me two hundred dollars