I bought my Yugo SKS when they were plentiful (bought it then for $140, I would expect the price on a similar one nowadays to be at least 3x that). The serial number dates it to 1974, and it was either never issued or fully rearsenaled at some point because it really was practically brand new (with free cosmoline, even!).
They're great guns. Fairly accurate and very reliable, but with so-so weight and handling characteristics. As a ranch gun, it would be plenty capable and hit hard enough to deal with all kinds of four and two legged varmints out to a few hundred yards. You'll do yourself a favor if you get a bunch of SKS stripper clips so you can have some spare ammo ready to go.