An Old School RuneScape (OSRS) tool that estimates the optimal prices for selling items to non-player character (NPC) stores, thereby maximizing profit. This is achieved by considering the store’s buying price relative to the item’s Grand Exchange (GE) value and factoring in any applicable Karamja gloves bonus. For example, a player might use this tool to determine if selling adamant scimitars to a shop in Al Kharid, instead of using the Grand Exchange, is more lucrative given current market conditions and if the player is wearing Karamja gloves.
The relevance of these tools stems from the limited GE trading slots and the potential for instant sales, albeit at a potentially lower profit margin. These aids save time otherwise spent manually comparing prices across multiple NPC stores and constantly fluctuating GE values. Historically, players have relied on spreadsheets or community-sourced information to make informed selling decisions. The automation provided by these instruments represents a significant efficiency gain for those seeking to optimize their in-game revenue.