If you placed an order in a hurry and accidentally paid a ton for expedited shipping, this isn't BD's fault. Todd probably figured you knew what you were doing and wanted the caps quickly and were willing to pay for it.
Another thing to keep in mind, Paypal now keeps the fees when you cancel a sale. Doesn't matter if it is a mistake, or error, Paypal keeps it. So if you mess up, do you expect Todd to eat the fees?
Finally, did you contact Todd, or did you come right here and start a thread to complain? Todd's a reasonable guy and is nice. But if the approach you took is to immediately come here and bash him first, I wouldn't expect him to bend over backwards to be nice.