Wait, wait, wait.
The Atomic Jet is super rare in any condition. $475 isn't bad, despite the missing finish. Maybe a LITTLE high, but I've seen gleaming mint ones sell for WAY more than that -- well over a grand. And boxed? Forget it -- that's one of the rarest boxes in the hobby. Not as rare as the Pyro's box, but I've seen very few for sale over the years, and I've never been able to afford one. (More than $2K. Way more.)
There are two other Stevens guns, the Neutron and the Jet Jr. The Neutron is pretty rare, just not as rare as the Atomic Jet. A nice one can cost anywhere from $700-$900. Tough box, too. The Jet Jr. is pretty common and can be had for less than $200. I've seen quite a few boxed examples as well. It's also the smallest of the three guns.
(There are actually some foreign variations, too, but I don't know as much about them. And at least two prototypes of a battery-operated version are known, one complete and one that hadn't been assembled.)
Let's be careful not to lump this gun in with the Space Outlaw or even the Strato Gun -- they're all chrome plated, die-cast toys, but the Stevens Atomic Jet is in an entirely different weight class (in terms of rarity and price, not style).
That said... Personally, I'm not interested in this one. I'd rather spend more to get a nicer example, even though it'll take me a while to pull it off. Also, this isn't my favorite of the three -- I like the Neutron (which I already own). So while I don't think $475 is a terrible price, I don't think it's the RIGHT PRICE for me. It comes down to how you feel about condition vs. rarity vs. price, and your level of patience. ;)
But whatever -- make no mistake, this is one of the higher-end guns in the hobby.
(Quick note on the Outlaw -- there are actually two versions of the gun. The earliest is has a nickel colored finish and a red front sight, the later one has a shinier chrome finish and a chrome front sight. The later version is much more common than the earlier one, which doesn't come up for sale all too often. I've seen a few -- I own one -- but that first version is tough to get. There were also at least two boxes, the earlier full-color illustrated box, and the later black box.)