I got these from Craigslist for $100 each. The seller got them from Area 51 in Seattle for $250 each.
These are a good copy of a Navy Issue Stool that was used on ships, designed in 1944. They clean up like a breeze and are very neutral. The only thing you have to get used to is how light they are (being hollow aluminum).
Target is replicating this stool for $179.99. They were actually sued for how closely this matches the real thing….so buy it before they take it off the shelves.