lets say I have two plans:
- Basic: allows up to 5 users ($100)
- Pro: allows up to 10 users ($150)
A company signs up for the basic plan, but mid month they realize they need at least 6 users so they have to upgrade to the pro plan. How would I go about implementing that and how to collect the difference in payment (~$25)?
Should I update the subscription to the new plan? Or cancel the old subscription and create a new subscription? Do I calculate the difference and create a payment or does the API do it?