Prorate calculations incorrect?

Hello,

I believe some of the prorate calculations for the plan upgrade all incorrect and unfair for the user.
The documentation for the prorated upgrade options is here:
docs.joomdonation.com/membershippro/basi...lans/upgrade-options
docs.joomdonation.com/membershippro/basi...ated-upgrade-options

It is unclear from that if the "By Price" option restarts the billing period. Does it? If it does then that one is fair but the user has to pay more up front.

If the user wants to keep the same start and end date the correct calculation should be as follows:
UPGRADE_CHARGE = (NEW_PLAN_PRICE - CURRENT_PLAN_PRICE) * DAYS_LEFT / 365
Using the $30 example on the first docs page I linked will look like this:
UPGRADE_CHARGE = ($50 - $30) * 10 / 30 = $6.67



 

Hi Nathan

Actually, the prorate calculation is only designed for upgrading from one time payment subscription plan for recurring subscription plan

Upgrading to recurring plan is complicated and the price calculation won't work properly at the moment

Regards,

Tuan