They don't want to pay the high luxury tax is the real reason because GOD knows they have a bushel full of monies especially from their YES Network.
They always spend what's necessary to get into the playoff but winning the World Series is another story.
We'll see what happens in 2013.
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"It doesn't cost "nuttin", to be nice". 
MOM
I just want to do the right thing! Uncle Joe, (my hero).