PreScaleQuestions

Do I need an Extended License to use an item in the packaging for a physical end product that I'm selling? What about for advertising for an end product that I'm selling?

No, the Regular License is fine. You only need the Extended License if the item is actually part of the product itself.

Which license do I need for an end product that is free, but has parts you need to pay to access?

If the item is used within the free part, the Regular License if fine. If the item is used only in a part that requires payment to access, you need the Extended License.

Example: If you were using a 3d model of a sword for a game and you could only get the sword by buying it, you'd need the Extended License. If it was the starting weapon that even non-paying users could use, all you'd need is the Regular License.