I'd like to point out the /look [Number] command. This is used after you do a /buy OR /sell command. After you do /buy or /sell, it will give you a list. To the right of the player name that owns the shop, there will be a number. (cheapest to most expensive, just like the list). If you do /look [Number that a certain store is] it will point your head in the direction of the shop. Useful for big stores will things everywhere. This works for /buy and /sell the same way.