I am on Quickbooks 2019 and I have been able to get the software to work in macOS 12.3.1. If have the computer that it will run on like macOS 10.15.7 Catalina you can update that version on that machine. Copy out the quickbooks 2019.app in the Applications folders. Once you have macOS Monterey running just copy over the file into the applicaitons folder. You will have to register the application online. I don't know after May 2022 that it will work to register it.
I don't mind paying a reasonable fee $100 a year or something to keep current but $350 is just too much. I'll keep an old computer around just to run Quickbooks until I can find something that will work.
Gary
