We've been weaning ourselves off ordering things from Amazon, so my wife went and ordered something big from a different retailer, who was actually advertising it at a lower price than Amazon. Well, after a week of waiting for the item to ship, it suddenly just arrived. Turns out the order was fulfilled through Amazon anyway.

@briankrebs

It's called "drop-shipping", and it's basically that the seller doesn't have the item, or/and can make a profit when he's selling the item on eBay at a higher price compared to the Amazon price.