Guns made after 1963 start at SN 2,700,000. Anything lower than that is pre-64. The prices quoted seem about right to me.
But prices are hard to predict and if you find the right buyer I wouldn't be surprised if someone paid $500+. Winchester hasn't made any USA made 94's in a while and people still want them. A lot of guys are holding on to theirs and prices are inching up. I wouldn't be interested in one at much over $300, but many others might.