A shipment is created when you create a label or mark an order as dispatched. Though, if you create a shipping label and dispatch an order, this will count as one shipment. Orders not fulfilled on Zenstores will not count towards your limit.
Absolutely not, if you don’t want to commit to a long-term subscription you can just pay month by month. However, we do offer a 20% discount when you subscribe to an annual plan, so that’s worth considering once you’ve figured out whether Zenstores Dispatch is right for you.