Confusion about Ps plans!

It does seem a bit confusing. A standard single app subscription for any major Adobe app is $20 a month.

The Photography Plan, PS + Lr, is a special discount deal, outside the normal pricing.

You can get it for $10 a month with 20GB cloud storage. That's less cloud storage than a standard subscription, but if, like many of us, you work locally and cloud storage is irrelevant, it's a no-brainer. Then you go for the $10 Photography Plan.

Such special deals are often just a limited time window, but this is in fact a permanent option. It's been in effect for many years, and there are no indications that it will not continue. They're probably doing this because it covers a huge market segment, and the price cut still pays off in sheer volume.