I will try to clarify that information for you. Dovell stated that he was already aware of the cost differences between the subscription (monthly/yearly) and lifetime PRO memberships.
Aside from the cost difference, The only differences for the three PRO payment plans is the length of time you have access to the program. The available features of the program are the same for all pro members using desktop software.
1) one monthly payment gives you a month of access. It recurs unless cancelled. 2) one yearly payment gives you a year of access. It recurs unless cancelled. 3) one lifetime membership gives you access "permanently".
(if you buy a year membership, the cost per month is less than the
monthly subscription cost. If you buy the lifetime membership, the cost
could be significantly less "per month")