Steve, you are in the ballpark for an average one, the nicer they get, the more expensive.
I pick up mags when I can, anything cheaper than about $85 and I buy it, provided numbers are not sanded off, restamped, etc.
I myself would like to pick up 2 or 3 nice bodies, but could care less about the bottom (I have a few rescued bottoms that need nicer bodies)
Ed