The thing keeping me on Prime has been their unlimited photo backup service. The desktop app either doesn't work anymore or I have too much content for it to h

The thing keeping me on Prime has been their unlimited photo backup service. The desktop app either doesn't work anymore or I have too much content for it to handle. It spins and spins but nothing happens. I can manually backup via the web client but it's a huge pain and there's no automatic sync of new content. I never really know if I'm 100% backed up either. I was excited to see Apple announce new iCloud tiers above their old 2TB limit, but the prices go up linearly with storage and as an amateur photography enthusiast I'm not sure even the 6TB $30/mo plan would cover me. The only other choice is an eye-watering $60/mo plan for 12TB.