Does it make sense to create a bulletin board?

Question

Startups

Does it make sense to create a bulletin board for a certain category of goods, i.e. not like Avito or Slando, where there are a lot of sections, but let's say the products of a specific company, a specific brand.
I think that if a person wants to purchase goods from this particular manufacturer, then it will be more convenient for him to search on a specialized bulletin board. How do you think?

Answer 1

Where is the money?

Answer 2

If I want to purchase a product, then I read the comments (reviews) for this product.
But the idea for each brand is its own board, it might be better:
“display all comments (reviews) on the products of this brand on the board related to this brand”