The currency Borderlands Pre-Sequel Guide

In Borderlands the Pre-Sequel there are two currency systems. For dollars, you can buy arms at regular stores (machines and NPCs). Dollars are the standard currency dropped by, nearly, every opponent or crate. The other currency are the, so called, Moonstones, which you can redeem for, among others, upgrades. These upgrades include inventory capacity, or bank, enlargement and upgrades to the maximum ammo capacity that you can carry. For each type of weaponry, you can buy an upgrade. The store with upgrades are in Concordia and it is run by Earl. For Moonstones, you can also open chests scattered all around the game world and also buy drinks at Moxxi's bar.

Drinks are nothing else than special boosts for your character. Moxxtail's, which is the name of the drinks, can boost the damage factor, defense factor or health regeneration, for 30 minutes. At each time, you can only have the effect of one such during on you and each successive one replaces the effect of the previous one. Drinks can be found at the main counter in the bar and they cost 10 Moonstones each. You can receive Moonstones themselves, by killing opponents, from crates, toilets and everything that can be opened. Some of the side missions provide you with Moonstones as a reward. This currency is quite rare so, spend it with consideration.