This is NOT free
Q. How much does Tradesafe cost me?
A. Tradesafe Payments offers a highly competitive fee structure. For credit-card transactions, it's 50¢ per transaction, plus 3.5% of the dollar amount of the sale including the shipping costs. For example, an item which costs $95 + $5 in shipping is a $100 transaction and the fee would be 50¢ plus $3.50, for a total of $4.
The cost for cash transactions is 50¢ + 1% of the transaction amount up to a maximum fee of $1,000.
(Here is something paypal should learn)
IMPORTANT NOTE: At the seller's option, Tradesafe fees on all Express Payments may be paid by the seller, the buyer, or split evenly. This means that depending on the seller's fee payment preference, your fee on the payment example above may not be four dollars, but two dollars. It may also be completely free to you.
For Exchange orders, buyers and sellers may negotiate who pays the fee.