Purchases are not open yet. At launch, choose a subscription that refreshes your credits every billing period, or a one-time pack whose credits never expire.
A top-up that arrives on its own, every month.
Planned launch price: $3.99 per month, billed automatically until cancelled. This page does not take payment.
One purchase. No auto-renewal.
Planned launch price: one payment of $5.99 with no renewal. This page does not take payment.
UnimeType prices work in credits rather than dollars, because that is what you are actually buying. A conversion costs one credit. Polish and Explain return much longer text, so they cost more.
The multiplier for a model is shown when you pick it, never after the fact. Both products spend from the same balance; what differs is how long the credits last.