You are looking towards the wrong direction.
What you are searching for is entertainment and consistency.
If you grab a cheap camera and make a photo it will be 100% photorealistic.
Will it create enough attention to sell "anything" well? don't think so...
check out the submission guidelines for cgmood.com it shows that if you keep it consistent it just looks good.
Sorry guys, I didn't clarify what I've meant :). My question is not about 3d-models. I've meant sales of buildings, apartments and other architectural stuff which normally goes to the market before they built.
I would like to know did somebody make research to get the result something like
- Good quality photorealistic images help to sell architecture much (with some numbers)
Or other way
- It's doesn't matter for sales - do you use photorealistic images, or you use pictures taken from Archicad, people don't care