I sometimes intentionally do that here as the IKEA online store has very high shipping costs (They probably want people to come to the store and pick up a bunch

I sometimes intentionally do that here as the IKEA online store has very high shipping costs (They probably want people to come to the store and pick up a bunch of other things on the way). There's sellers that sell IKEA things on Amazon with a markup but it's still cheaper than IKEA's shipping. I'm assuming it's just people buying a cart full of the same product and re-selling it on Amazon.