To ensure that they will buy from Tripleclicks, make them part of the SFI Family. Make them part of the Tripleclicks store, if they are part of it they will purchase it. Just like having your own store, what you need that is in your you have to buy in your store.
Another reason why they have to buy at Tripleclicks is the opportunity to gain VP's, MRP, and TCredits from their purchase which they may use to purchase other products after accumulating it.
