Depends on the quality.
I mean it could be a pack with 10 astonishing scenery models.
Or a model with 100 "ugly" looking models.
Than i would rather pay €10,- for the quality models than for the other.
Also if it is a pack with mostly crates or simple mesh models.
Than i have the idea that i could make them myself.
But! If it is a pack with more detailed models like:
Buildings, vehicles, statues, temple stuff etc.
Or something unique. Than you could charge more for it.
Same goes with dynamic objects! If its just a static model nothing special about it.
Except that its looking good. Than i think you could charge €10,- for it.
But! If they are dynamic objects with animations and maybe a special script etc.
Even though they are the same objects but this time they have anims.
Than i think you could charge more for it.
Hope this helped.