I’ve long thought this sort of thing would be a really good business model. You could launch a bunch of vertical sites and use the same shipping / fulfillment system. Huge irony would be if you did this with Fulfillment by Amazon, but it would probably work.
I guess the core problem is that when you’re looking for something new, browsing Amazon is a total mess. It would be much easier to do a web search and find bullshitfreebulbs.com to make your purchase.
But if it’s something you buy often, Prime + order history is easily the fastest, most convenient way to buy something.