With the feedbacks from Davi and the benchmarks heuristic analysis I quickly put together a Journey with what I defined as site's most common problems:
Usually e-commerce platforms pushes to the seller (client) to improve their offers by completing description, categories and photos, promoting paid ads, or other paid products.
As a platform holding all the data, it's possible to think an experience based on the integration of what the platform know with what the user can do. By adding simple Data-Based Tips on the experience, offered options can be more assertive to users. Besides, with transparency over his results, the user can learn about his market while keeping up with his sales.
So designed the following wireframe (with the essential interactions).