How much is 1 WAR win with now -- maybe million? (i'm behind on the most recent analytics) ... Lindor in 2 years generates 12 WAR wins x 8 M = 96M bucks (total guess: his salary in those 2 years is 30M?) - he throws off 66M in value. Senzel in 5 years gives you 18 Wins x 8 = 144M at the cost of 50m over the 5 years = 94 M I also believe that wins that are produced at the margins might be worth more than a replacement player win. I never can remember the econ term ... looks like you're correct Kinsm .... but i don't believe it's near as far apart in value and cost as it appears. Maybe the term i'm looking for is Marginal Value ...you factor in the opportunity cost and in doing so it increases the value of players who produce at a high level.
In the end - not making the trade is still a silly thing to do ... unless you're rooting for the owners bottom line.