I was doing an FFL transfer around the Stoneham area today on a private party sale and while filling out paperwork the FFL mentioned that I needed a lock. I said I could grab one from the car but he said that's not allowed and directed me to the wall of locks they sell. I walked over and grabbed the cheapest cable lock they had and when they rung me up he added the lock cost to the total. Their transfer fee already seemed high at $55 but then the $8.99 for the cheap cable lock we all have too many of seemed a bit much. I didn't want to argue over a few bucks so I just paid and left. If the seller had included a cable box with the firearm I'm assuming that would've sufficed? I'm assuming this is normal but wasn't something I had thought of before.