I believe the road to UX hell is paved with "we want to be a marketplace". Even for a single SKU, Amazon will often stock the same item as new/used/refurb, fro

I believe the road to UX hell is paved with "we want to be a marketplace". Even for a single SKU, Amazon will often stock the same item as new/used/refurb, from several sellers, at a whole galaxy of prices. This means there is no lone price to sort by, because you can't start with asking the user "Are you okay with a used one? Will you trust Acme Reseller Ltd as a merchant?".