The key word here is "small". A small bank (about 10 branches, two branches with coin machine) which I know pays 5% for the coins coming in and going out. Their customers get charged for 5% for dumping coins in the coin counter. One branch ordered me 1 box of pennies and told me no more. However I am allowed to buy their bags from their machine as many as I want because I save 5% of shipping fee for them. They are trying to sell me the quarter bag ($1000) every time I am in this branch. Shipping a bag of quarter will cost them $50. I only want to buy penny, nickel, and dime. Quarter boxes are very dry in my area so I don't have too much hope for the bag either.
Recently this bank became a member of Fed Reserve (not every small bank belongs to Fed Reserve system) so they can get coins once a week for free from the Fed. But shipping back still costs them. Most small banks don't have a flat fee deal with Armoured truck company like midsized or large banks. I may ask them about ordering coin again and maybe pay the truck fee.
So if I were you, I will just be grateful and move on. Or ask if they have a coin machine so you can buy bags from their machine (saving money for them). If you try to dump on them, your account will be closed soon.