Nothing seems to obsess general managers (and fans) as much as the home run. And with the steroid era (maybe) in the past, there are a lot fewer of those out there to find. Which means that given the perhaps irrationally high demand and the declining supply, the price for them is going to go up. Which is a very good reason to be skeptical of deals for power hitters.
Unfortunately, the Diamondbacks just can't quite get over their sense that they need more power on the team. So they have made a deal to acquire Mark Trumbo from the Angels. To my eye, Trumbo is the reincarnation of former Diamondback Mark Reynolds -- 30-35 home runs, a batting average south of .250, and nearly 200 strikeouts a year. I wouldn't take this kind of player if you gave him to me. He is an inning killer who manages to hit one out of the park every five games or so. I suppose he is cheap in money terms (has a couple of years until free agency) but we traded two good players who had down years last year. In stock market terms, we are selling at the bottom and buying at the top.