Pirates manager Clint Hurdle adds another consideration when deciding upon September call-ups: cost. In Biertempfel's piece, Hurdle pointed out, "In my rookie year, if you got a call-up, you made $5,000 or $6,000 (in September). Now you’re talking about making $75,000. So if you call up 10 guys, you’re picking up $750,000 in salary and everything that goes with it."
— From MLBTR. I'm surprised this is considered a real issue even, in spite of the fact that the Pirates have picked up salary in trades and whatnot. Not to mention that comparing amounts with Hurdle's rookie year makes as much sense as some of Hurdle's in-game moves (yeah, i couldn't resist, in spite of today's good showing by Hurdle)