Grand Exchange clerk

Grand Exchange clerks are non-player characters located in the Grand Exchange north-west of Varrock. In the Grand Exchange, there are 2 clerks, next to 2 bankers.

Upon right clicking a clerk, you get several options:
 * Exchange: Quick option; players can buy and/or sell items, and collect items from completed trades.
 * Talk-to: Players can talk to the Grand Exchange clerks to access the Grand Exchange account.
 * History: Players can view their personal Grand Exchange trade history. This is, however, limited to the last five transactions.
 * Sets: Players can exchange complete sets of armour; either from individual component items into a complete item set, or from a complete item set into individual component items.