I visited the US Mint in Denver a couple of years ago. They pointed out how it cost about two cents to make a penny and more than a nickel to make a nickel (in 2021: 2.06 cents to make a penny and 7.53 cents to make a nickel). I told the guide that I had an idea that would save them a lot of money, and help out with the 'change' shortages: Pay $1.25 or so for every 100 pennies turned in (at banks or elsewhere) then they would not have to make more pennies that would just disappear anyway and would not have to make any more at a loss. He agreed it was a good idea and would think about it. He also pointed out that they more than made up for the losses on pennies from the dimes and quarters - I think he said that dimes cost about 4 cents to make and quarters cost about 9 cents to make.