If you get more than one item in on a transfer you are charged the same $20 for each. This is not the way most up and up places do business in order to keep their customers. A place trying to keep customer's would just charge the one transfer fee even if 2 or 3 weapon's. Just a head's up.
I don't think they are doing the business needed to keep going and doing customers this way won't help that's for sure.