As of writing, Subbly doesn’t offer pre-payment for your products. You can currently setup a product to be paid up front but as a subscription. E.g. 12 monthly shipments billed every year. This is the same except it renews at the end of the year.

However, please note that the "proper" pre-payment feature without auto renewal is on its way! In order for our developers to introduce this as soon as they can, please make sure to vote for this here.

Thanks!