No, it's fine to offer similar products. Good on Netflix for this. In the more general sense of the search topic, I don't want a search to return things they d

No, it's fine to offer similar products. Good on Netflix for this. In the more general sense of the search topic, I don't want a search to return things they don't have. If it's out of stock, say so prominently. Don't make the user click through to the item itself only to see "out of stock".