yep, this one right here. First two Fallouts were actually pretty good at using barter and money balanced to the end. at start you don't have anything and you can afford only most basic things like one or maybe two stimpacks and some bullets. bullets were pretty scarce too (but not too scarce), so you need to loot people. and you can't carry really much with you to sell a lot at once. also, a lot of people just didn't have money to make up for really good guns. you never feel to rich, except if your main goal is to be rich