I have improved the buy and sell commands to make trading with the bot easier.

!buy ItemName quantity (!buy ticket 1) - will allow you to buy 1 Tour of Duty Ticket.
!sell ItemName quantity (!sell ticket 1) - will allow you to sell 1 Tour of Duty Ticket.
!basket - This will allow you to check what items have been added to yoir basket/cart
!trade - Once the basket has the required items this will tell the bot to send you a trade offer adding the keys/metal on each side
!clear - Clears the basket of all items
!rem - Removes the last added item
!rem ItemName - (!rem ticket) - Removes an item mathcing the name from the basket