I have a question about the product libarey

Dormi-Aria

if I purchased a bundle on here, is it mine for ever or do I have to repay for it after a certian amount of time?

JimmyC_2009

All products that you buy in the store here are yours for good.

You never have to pay for the same product again. The items you have bought should remain in the Product Library, and you can re-download them at any time

Richard Haseltine

Within the terms of the license, that is - which covers using the content in 2D images and animations. If you want to embed 3D data in a game or application then you need the Game Developer License, if there is one for the creator, in addition to the standard license (but you can create animated 2D spites or cut scenes for a game with the basic license). 3D printing is also not covered by the basic license, but you would be covered for producing framed 2D images and selling them.