How much are extended licenses in credits?

Hello, I would like to purchase images for resale on prints / coffee mugs etc. I want to find out the most cost effective way of doing this.

As I understand it, extended licenses (which I need for resale) are not covered by the standard subscriptions. You can use the credit packs though.

How much is a credit worth? It doesn't say when I look at an image I want to buy. For example it says $47.99 for an extended license, butu what's that in credits?

Is there a better way to buy adobe imgaes for resale?

Much appreciated, Kind regards 🙂