Buy is a command that is used in rooms with a shopkeeper mob. You purchase one of the listed items for its equivalent cash value.
In Game Description[]
Syntax: buy <item> Used in shops to purchase items and services. Note that some shopkeepers dislike people making fun of them by attempting to shortchange them on an item. Example: > Buy sword If the shopkeeper has more than one sword available for purchase, then review the list and "buy 3.sword" if you want the third sword listed.