As defined by Tangotiger (and basically copied by Fangraphs), Replacement level is about 2 wins below average. So if you 1-8 batters who were all 3 WAR and everything else was average, you'd win 89 games. Replacement level is a nice baseline, since we know the value of a AAAA player, league minimum. The tango/fangraphs method of assigning value assumes that every win above replacement level is worth about $4.5 mil. It doesn't matter if the player is 3 WAR or 6 WAR. His total value is just WAR x $/WAR. Like anything, it's all just a best guess estimate but it seems to work pretty well in predicting what teams are willing to spend in free agency, so sounds good to me. And no, none of that includes the value of intangibles, since by definition, it doesn't have a quantifiable value. I try not to spend my money on things that have a completely unknown value, personally. Prince is one pace for a 6 WAR season. He was at 2.6 and 4.9 for the preceding 2 years. A projection for 2010 and 2011 might be around 4.5 for each year? Obviously, if Melvin can't get more than 9 WAR for the price Prince will get over the next 2 years, there's little point in trading him. If he could get 15 WAR in return but they would be spread out between 2010-2014, Melvin has to decide where he wants the wins. i find it hard to see how the Brewers could be legitimate contenders next year, so my vote would be to move him if the offer good. And I think some will never appreciate the concept of "projected production minus salary". If the only way the Brewers can sign Fielder is by paying him more than he's worth to them, they've already lost. That money can most likely be used more efficiently somewhere else. Also remember, the value of a win for each team is different. Anytime the Brewers go up against the Yankees or Boston for a free agent, they HAVE to overspend to get that player. Those are the kind of situations the Crew has to avoid. What do people really think are the odds of the Brewers resigning Fielder? I'd put it at less than 10%, easy. And as enjoyable as he is to watch, I don't think it will be in the best interest of the Brewers to resign him. But I have to take of my "fan" hat to come to that conclusion.