Don't laugh, JonnyB...
I'm assuming you haven't been paying attention to the imported semiauto rifle market in the last couple of years under the Clinton administration. Because as it turns out, prices on basically ANY rifle can climb to whatever the market supports, and turn that same rifle into something worth collecting.
Case in point, the AK-47 clones that used to be so plentiful. Certain varieties are banned from import, and voila', you see a Bulgarian SLR-95 that sold for $219.95 when they first arrived climb in price to over $600.00, I've seen over $900.00, because they were banned from import, etc. As the BATF bans a certain group, others step up to fill the void, but in the meantime the banned guns simply appreciate.
Same goes for what were once considered undesirable British Lee-Enfields. I would never have considered paying more than $100.00 for a mangy-looking No1MkIII SMLE, but guess what? ALthough they're not banned, there aren't that many more being imported, and the prices reflect it, even the Ishapores aren't quite so cheap. When the big batch of No5Mk1 Jungle Carbines hit these shores last year they were selling for $200 immediately. Now they're climbing up again.
And so it goes for the SKS. See if you can find any new-in-the box Chinese SKS for that wonderful 1991 price of $75-100 nowadays. And while I don't place the SKS in the same collector's category as a pre-64 Model 70 Winchester, I wouldn't deride the individual who has a nice, matching numbers SKS and decides to sit on it for a few years as it appreciates in price, regardless of how clunky it may appear. And that's coming from a guy who had a NIB SKS back then, and sold it for close to the $100 I paid in 1991. Hindsight being 20/20...