This was priced incorrectly by the seller with a BIN of $35. The listing lasted less than 20 minutes. Using an auction format, it surely would have broken the $200 mark. Unless you know what you are doing, avoid placing a BIN on items.
The seller doesn't provide measurements, but this appears to be the smallest of the three sizes U.S. Metal Toy produced during the 1950s, measuring 4" high by 5" in diameter. The seller describes this as mint NOS. I feel it is far from mint. These don't get the collector love they should. SGV is $40.
I don't understand a lot of the auction results I'm seeing. This noisemaker, a very cool 1960s design by US Metal Toy, is not particularly rare, as it surfaces with regularity. It typically changes hands for $225. As is so often the case here, there were only two determined bidders driving up the price to this wholly unsustainable level. Unless the prevailing bidder offers it to the underbidder, I am certain this price will never again be obtained for this item. Collectors: have patience unless money is no concern.