I don't know if it's a dark pattern. In general, as somebody offering a search engine, you want the most flexibility to offer the best result to the user. You m

I don't know if it's a dark pattern. In general, as somebody offering a search engine, you want the most flexibility to offer the best result to the user. You might have the perfect item, but it's not available on Prime. Sometimes you even want to show results that break the user's filters especially if the filter is a default. Think about a real world interaction. "I want a red sweater shipped via Prime" What's a better response, A or B? A: "Sorry, no red sweaters. The closest thing I have is some red t-shirts." B: "It's not Prime, but I have a highly rated red sweater that can be there in 5 days"