I think the 70's pricing is pretty good (the 80's has too overpriced starters and underpriced cheap relievers) but there are some definite misses in the 70's game as well.
Morgan is not overpriced IMO. He's by far the best 2B in the 70's (and one of the best hitters overall), he is excellent defensively, has great OBP, power and speed. I've had him several times and unless you get his one bad season he's worth it.
Grich: Only one great season, so he should be around 6-6.5.
Otis: Great defensively, but too left leaning for that price. He should be around 6 mil.
Rettenmund: Should be around 4.5
Mayberry: Not nearly as good as similarly priced 1B.
N. Colbert: Same as Mayberry.
Rudi: I've never seen anyone use him.
Briggs: Bad defense and a pure platoon type. How is he more than Blomberg?
Jorgensen: Never seen him used.
Blair: Great defense, but too left-leaning for that price.
R. White: No defense, and not enough power for that price.
Plus you have a ton of good defense/no offense players in the 3.5-4.5 million range like F. White, McMullen, Repoz, Bradford, Duncan, Hegan, Belanger, etc. that would probably be more usable if they were under 3 million.
There are a few underpriced guys as well but I won't reveal them :D