Economy
Market, trades and the shop
List an item at your own price and get paid when it sells. Trading with a player is safe: nothing changes hands until you both accept.
In the game/ah/trade/shop
The market
/ah is the players’ market: list an item at the price you want and the money comes to you when it sells; browse the others’ listings and buy. Helios VIPs can list more, and pay no tax on what they sell.
Trades
Trade with someone directly through /trade <player>: each of you sees what the other puts in, and the trade goes through when you both accept. You can turn trade requests off in /settings.
The shop
/shop is the server’s shop: items by category, with their buy and sell prices. /sell sells what is in your hand, /sell all everything sellable in your inventory at once.
The rule
Players buy and sell from each other only through the market and trades; trading for real money is not allowed.