When it comes to models, the Asset Store has no rules for the publisher:
He doesn't have to state any details about the model in the product description.
On other platforms for models (like TurboSquid), authors need to state the following:
- What is the tri count
- Is it unwrapped?
- Are UVs overlapping?
- Does the model have LODs? If yes, what is their tri count?
- Is the model animted?
- Type of maps
- Optionally other info
For the Unity Asset Store, there are no regulations at all.
The publishers do not have to publish any description at all.
To diminish the frustration on the buyer side after a purchase, the publishers should be forced to publish product details in the product description.
This way, a buyer knows in advance what he will get instead of much back and forth discussion with the author (in case he is still available for discussion at all).