Romulus, it's still CA East when it comes to anti gun wackos and demagogues, but the maze of overlapping agencies means lots of used weapons hit the market periodically. Back when all the major agencies went to 9mm crunchentickers there were tons of used Colt Lawmen, Troopers, and S&W Models 19,28,10 etc, mostly with cosmetic wear and darn near new inside.
Same with shotguns. The one that's now my deer 870 and was an Arlington Va cruiser gun cost $140 back around 90, and I've seen similiar condition ones going for $175-$225 these days.
Other shotguns also come up, mostly S&W, Mossbergs, and the newer Winchesters. These run a bit less than 870s, of course, and may be a good budget shotgun for a backup or spare.
Maybe 5 years ago some Savage 311 doubles with 18bbls and utility grade lumber got surplussed out by a security company. I believe the worst condition ones went for about $150, a boon to any CAS shooters at the time.