If a ebook appears on a "Best Vendor Listing*, I assume the generic "best vendor book" is alright, but I do not like it much. In any other case, "best-advertising guide* is what I'd hope to describe a book that offered or is offering effectively with no reference to it https://buygroceryshopinadelaide.blogspot.com/2025/05/authentic-flavours-at-best-indian.html