Several thoughts.
As an FFL gunshop, it takes up our time doing a transfer. A gun coming in must be unboxed and checked for the serial number on the gun. It then has to be logged into our bound books. When a customer comes in to get the gun, we have to have the Form 4473 filled out. We then have to fill out our part of that form and copy their license(s). We have to make the NICS call to in our case, FDLE Firearms Transfer Program. If approved, then we collect the monies, transfer the gun to the owner if no waiting period due to them having a CCW license. We then complete the Form 4473 and log the gun out of our bound books. If no license, then at the end of the waiting period the form get finished and the gun logged out. Our total time involved can be up to an hour or as little as a half hour depending on the NICS check time spent waiting on the phone. For that, we charge $25 for the transfer and $7.00 for the call in. Any number of guns per customer can be done on that day for the same $7.00 but $25 is per gun. Remember, time is money. And if there is a problem with the sale, BATFE will come after the LGS also.