I'm a little confused (what else is new). You couldn't get boxes of quarters, so you bought that bag?
The only time you get bags is if Loomis hasn't picked them up to sort and roll. I have gotten cents this way a few times. Kinda fun, someone dumped what looked like a roll collection. All the coins were mainly 77' to 92.
Vending companies and laundromats bring them that way to their bank. As P&G said companies like Loomis pick them up to sort and roll for redistribution to the banks, and charge either by volume or contract. Most banks won’t sell them this way but small institutions like credit unions will if asked.