It is a bonding insurance service that gives your shoppers additioanl "security" that you will fulfill their order or they get their money back if you turn out to non-legit for some reason.
It was free to sin up and you paid an amount based on the total of the order IF the customer selected the option. However, I don't know if they have changed that policy at this point, but hearing rumors that they have (I've not been able to confirm or deny yet)
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Vote Mister Ed for Prez 2012, for a REAL change.
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