1) Chems. They weight next to nothing, everybody wants them and they are pretty expensive for something of their weight.
2) Ammunition. Don't have chems? Don't want to overpay? Bullets don't weight much, and you can almost always find a relatively large amount of them, so it makes them a nice low-value objects for currency.
2) Ammunition. Don't have chems? Don't want to overpay? Bullets don't weight much, and you can almost always find a relatively large amount of them, so it makes them a nice low-value objects for currency.