Updating from my post of earlier this morning - current as of 09.59, just before the sale - lined-through entry on the left is as of that time, entry on right is as of right now:
NLDS
Game 1 - 2,822 left starting at $40 2,851 left starting at $35
Game 2 - 6,029 starting at $45 6,117 starting at $46.95
Game 3 - 7,121 starting at $63 7,195 starting at $57
NLCS
Game 1 - 3,823 starting at $129 3,827 starting at $125
Game 2 - 3,951 starting at $120 3,959 starting at $113
Game 3 - 3,980 starting at $134 3,984 starting at $82
Game 4 - 3,755 starting at $140 3,745 starting at $82
World Series
Game 1 - 3,006 starting at $479 [no change since this morning]
Game 2 - 3,012 starting at $475 3,010 starting at $480.34
Game 3 - 3,045 starting at $490 [no change since this morning]
Game 4 - 2,961 starting at $575 [no change since this morning]