We have been observing that in most of the cases a few selected bookstores are listed on top even if they don’t have pricing or rating option for that book. While some stores with lowest pricing and a few good ratings are on the bottom. Moreover, there is no option where user can sort the data shown on the basis of price or rating. Would like to understand how this ranking system works while displaying the booksellers? And what improvements is required to rank higher if you are genuinely offering the best deal.