License agreement...

Howdy!

I just wanted to double check something with regards to the general license agreement. I make space and astronomy related stock footage and although I'm pretty good with space scenes, composting, animating, planets, motion graphics etc... I'm not much of a 3D modeller. So from time to time I like to license 3D models or hire a modeller to create stuff for me. 

I've read through the license agreement a couple of times and it looks like this is ok... 

For illustration, approved distribution or use of Product as Incorporated Product includes, but is not limited to:

1. as rendered still images or moving images; resold as part of a feature film, broadcast, or stock photography;

i.e. I create a short animation that contains a 3D model bought from cgtrader and make that animation available for sale (rendered moving images sold as stock), as long as I'm not distributing or selling the actual model itself, only renders made with the model. 

There's no mention of how many times I can use a model though... can I create one animation and then need to buy a new license if I want to make another animation? The license doesn't mention whether they are single use or multi use. So if I license one model, can I make a series of ten animations for example?  

There's some great models on here and I'd like to incorporate some of them in my work, but I also want to make sure I'm not breaking the rules, so if I can get a bit of clarification, that would be much appreciated! 

Thanks!

Scott