Been there, done that and got the t-shirt. One of the big-time boxers was sponsoring a gun buy-back in Maryland. He put up $100,000 of his own money and was offering $100 per gun. Well............
A while before that I had picked up 3 rusty, beat-up black powder pistols at a yard sale thinking I could fix them up. Paid $20 for all 3. You can probably guess what happened next......
I put them in a bag and went over to the church where they were doing it. The line stretched down the block. Lotsa regular folks just digging grandpa's old .22 rifle out of the attic so they could get one hundred dollars for it. I also saw quite a few sawed-off shotguns.
So I waited in line and man was it cold!!! Finally got inside and up to the table and handed the nice policeman the 3 pistols. He made sure they were unloaded and handed me a receipt for each one. I went upstairs and handed the receipts to another man and he handed me three, crisp one-hundred dollar bills. I practically ran back to my car and took my butt back to Virginia.
I put that three hundred dollars to good use. Went to the gun store the very next day and bought a very nice Colt Series 70 .45.