Be cautious of vendors who demand upfront payment before dispatching your order. Transacting through a trusted intermediary like iAssure means you can buy or sell anything without worrying about whether or not the transaction is a scam, whether the vendor has the ability to deliver as advertised, or the buyer has the capacity to pay for what has been ordered. With iAssure, the vendor only dispatches the order after the buyer has provided a payment guarantee, and the vendor can only be paid after the item has been delivered to the buyer.