Don't know about "good". I would say no, given that there is no box. Truly unfired and with a box, that might be close to the going rate for an unmarked overrun 357; maybe higher these days.
I bought my new overrun 357 when I was a grad student in Ohio back in 1984? Paid $300 for it as I recall, and it's given me a lot more pleasure than that over the years. I don't do much rifle hunting, and I like to shoot (and reload), not get beat up at the bench, so this was a perfect rifle for me and started my interest in uncatalogued, unmarked overrrun No. 1s. I have "several" other examples at this point.
If you want to shoot your 357, look for a used one for less money; if you want to collect (and not shoot it), this one might suit your needs. I'd still try to get it cheaper or look for a NIB example for that kind of money.
P.S. Many of these have been altered/rechambered, so they are only getting more rare. Any alteration for me is a deal breaker and turns a collectible No.1 into a shooter that was someone else's (wet?) dream, not mine. Of course, there are some very nice custom No. 1s out there that can command high prices, especially if done by a nationally known maker (again Joe Bob the gunsmit in Backwater Holler does not qualify here)
