Hi
We would like to add a banner within the product grid. We’re on Empire theme.
It would be great if someone has a solution!
Thanks a lot 
@Thomas-Aus - if by default there is no option to add banner then you can do it with theme code editing, but then all the product grid pages will have very same banner as they share the same code file.
If you want banner for 1 or 2 grids then you can create separate new product grid template for them and add banners to them so it will not affect other grids.
If you have many grids and want banner for each of them then I recommend some page builder app like pagefly to build your pages.
May I ask how to contact you? I also have this need.