Adobe is currently "testing" a new $20 per month Adobe Photography Plan and the cheaper $9,99 plan is already gone as an option for many customers:
Updated - here is the official response I received from Adobe:
"From time to time, we run tests on Adobe.com which cover a range of items, including plan options that may or may not be presented to all visitors to Adobe.com. We are currently running a number of tests on Adobe.com. The plan can be purchased here, via phone at 1-800-585-0774 or via major retailers.”
