Money is a very important thing in every open world game. There is a multitude ways of getting it. This page shows all legal ways of getting money. Moreover, we show how to make money in RDR2 and what to spend hard-earned cash on.
There could also be some weapons dealer contact (like Jacob in GTA 4 or Terry in GTA TLAD) that we could meet during the story,who could deliver and sell all weapons,to make it more convenient to players who don't want to go from store to store to resuply. It would be more realist...