I try to calculate this in hitters by looking at their RC in season and their performance history average RC. I tend to heavily look at players who routinely put up good RC/$ in this sim.
ex:
2016 Jose Ramirez has a salary of $4,421,865, and an avg PH of 100. That’s an RC/$ of 1RC/$44,218.65
1895 George Davis has a salary of $5,506,148 and an avg RC of 110. That’s an RC/$ of 1RC/$50,055.89
So from a purely value standpoint, I’d take Ramirez over Davis as, on average, he is going to give me more for that $.