One of my friends when I was younger had the best luck, everything he owned was a special run by the factory and only offered for one year. His Honda had a lightweight chromoly frame and more HP, his Model 70 in .270 had a factory target barrel in the sporter profile, almost everything he owned was like that. What an incredibly lucky guy. :shock:
The earliest Minis (180 series IIRC) are almost impossible to find parts for. The next series had a 1:7 twist so they are nice if you want to shoot 75 gr bullets, however even those only bring $350-500.
Ask him what kind of groups this $1000 wundergun shoots. I'm guessing 1/2" or maybe even 1/4" if it's one of those in that special run of 50 Mini-14s that Ruger made that one year only. :-D