If you use Microsoft Office for personal tasks, there's no reason to choose a monthly license. It's way more beneficial to invest in a lifetime purchase like this one.

Black Friday is now gone and we're heading into Cyber Monday. However, I've checked the prices and availability of these offers and at the time of writing, they're still in stock. Black Friday is the perfect time to fill your boots with Microsoft 365 subscriptions if you use a lot of cloud storage;