SKS's...
Oldshooter 60--Back in "the day" SKS's were well under $100/each. Gun show this past weekend had 'em at approaching $400. I would theorize that the inflation won't continue, so at this point they're not a good investment if you expect to make $$ on them.
The Russian SKS's are considered premium, and priced accordingly. The Chinese ones are at the bottom of the spectrum--even the military ones. I would not consider a "made for export to gullible 'sportsmen'" model, which includes the so-called "paratrooper SKS." Several other countries made military copies of the Russian ones; collectors can tell the differences at a glance but they are insignificant for the casual shooter.
I've had I think 3 SKS's along the line, and also shot a buddies'. They are very sturdy, with machined parts all through, no stamped sheet metal except the magazine. Most have 10-round mags, though a 20-rounder also exists. You can get aftermarket huge mags if you want to, though most are iffy as to performance.
If you are an accuracy freak they are not the rifle for you. Some claim to be able to retro-build an accurate SKS but that is not my experience. If you are a reloader, be informed that they fling the brass all over Robin Hood's barn. They also dent it up as badly as any other auto-loader. You CAN get reloadable brass for them, however the import military stuff is steel-cased or Berdan primed or both, and not conducive to best accuracy anyhow. (Boxer-primed steel cases CAN be reloaded, but why bother.)
They have no firing pin return spring (Comrade Simonov designed one into them, but it was rejected to save a couple of kopeks on each one.) Therefore be informed: SKS's are subject to slam-firing, especially if the firing pin is not kept clean. This isn't dangerous IF you are mentally prepared for it--The tragedies happen when the shooter drops the rifle in surprise, and the rifle keeps on firing. But it needs to be kept in mind, and explained to every person whom you let shoot the rifle. You can get a firing return spring put in, which pretty much eliminates the problem.
If, now, you just want a rifle to go bang a lot, and shoot tin cans with, and operate relatively cheaply, and never be concerned with fussy maintenance, and don't want an AR, then the SKS is the one for you, and for $300 plus, you can have a great deal of fun. It's up to you...