Adjust package formula


#1

Formula

Remaining days * (New package price / Old package price)

Example

  • Current package: 250 subs (100 remaining days)
  • Wants to upgrade to 500 subs package
  • 250 subs price: 160$, 500 subs price: 320$

Formula for new remaining days = 100 * (320/160) = 50 remaining days.

After package upgrade to 500 subs, the new expiry will be adjusted to 50 remaining days.