Quote - 3. Lower license prices makes the chance higher that they are use YOUR 3d models in their freeware programms and CREDITS YOU AND YOUR WORK.
The first two options makes not more money for yourself !

There are a lot online stores who have different licenses for freeware (non commercial use) and commercial programmers.

Perhaps you don't understand that vendors already can't police the theft of their models.  Vendor will get no assistance from the brokerages nor SM in finding and stopping outright theft of their work. 

If a vendor chooses to charge more for opening their products to even MORE theft, by including the models in your game, then you should be pleased that they are even making the offer.

Just because YOU choose freeware doesn't mean a vendor wants to participate in that business model.

Do you know what your CREDITS do?  They put up a giant sign pointing thieves right to your products.  No thanks.