Many business accounts have a monthly allowance of free cash deposits, but the standard fee is 30¢ per $100.
https://www.bankofamerica.com/salesservices/smallbusiness/re...
https://www08.wellsfargomedia.com/assets/pdf/small-business/...
https://www.bankofamerica.com/salesservices/smallbusiness/re...
https://www08.wellsfargomedia.com/assets/pdf/small-business/...
While I think it's ridiculous, a 0.3% fee for over $20k in deposited cash per month doesn't sound unreasonable for handling risk.
Personally, I wouldn't be banking with either of those companies because I think they just exist as parasites. Find a good credit union.
Consumer banking is a very different beast to business banking.