Filtering by seller requires you to have selected a category, which I find you often have to do several times over to cover all the categories in which the item you&#x27;re looking for might be located.<p>Filtering for Prime also includes anything fulfilled by Amazon, which I think most people will agree only marginally reduces the risk of getting sub-par quality from random seller number 5.<p>I am yet to find a reliable or convenient method of limiting search results to Amazon-only products.