Money

Money is the currency used in Guild Wars. There are two denominations of money, gold and platinum. One unit of platinum is worth 1000 units of gold.

Terminology
People refer to gold often as simply "g"/"G"/"gp"/"GP" ("GP" means "Gold Pieces") (as in "540g") or just omit it all together (e.g. WTS yellow dye for 200). Platinum is referred to as "p", "plat", or "k"/"K", the latter being because k represents 1000 (e.g. WTS silver dye for 8k).

The symbol for gold is and the corresponding symbol for platinum is.

Obtaining money
Money is often obtained by loot, which is dropped by monsters in the PvE part of the game. Also items in your inventory may be sold to other players or merchants.

Money substitute
The maximum amount of money a player can carry at any time is 100, and thus it is the limit of how much can be traded in a single session. When trading among players involves monetary amount greater than 100, high-priced stackable items are often used to make up for the amount above 100. The most popular monetary substitute is Glob of Ectoplasm.