I think this is the specific Phillies ownership pathology. They hate spending money on amateur talent. This was Giles' thing. When his team bought the Phillies, the first thing he did was gut the scouting system and reduce spending on the minor leagues. They have been stingy on minor league bonuses ever since. I don't think Middleton is as driven by the bottom line as Giles and Middleton were -- I don't think he would have ordered Gillick to trade Burrell and his salary (became Abreu, when Burrell invoked his FNTC) to balance the budget, nor would he have dumped Pence for the same reason. Given a chance to make a really serious run at a 2nd WC, I believe Middleton would have given RAJ permission to go $9 mill over budget and go with both Lee and Halladay in their primes.
However, as of today, no indication that Middleton cares about maximizing the farm and spending an extra couple of million on under-23 international and perhap $5-10 mill on over-23 internaitonal to do so. He can be sold on spending $tens of millions on marginal vets like Kendrick and Saunders, but it seems hard-wired in the DNA of the post-Giles Phillies that you don't spend aggressively on the farm. You spend just 'enough'. You do nothing to irritate the commish. You don't seize opportunities. Good enough is good enough, even if you have the weakest team in MLB, while the Braves have the strongest farm.
It is not a question of being cheap overall. Middleton, in total, has spent about as much as is reasonable to spend this season. I don't think he's spent it wisely and he seems to have deliberately chosen not to do as much as he could on the farm. He has been an owner for a long time. He has soaked up the vibe of Giles and Montgomery.