The total cost of all tiers is 2,950 Monkey Money in the mobile version and console version, or 1,750 in the Flash version and Deluxe.
Tier
Description
Cost
Notes
Mobile / console
Flash / Deluxe
Mobile / console
Flash / Deluxe
I
Reduces tower and upgrade cost by 5% Increases the cost of Boomerang Throwers and upgrades by 5%
Reduces the cost of Dart Monkeys and their upgrades by 5% Increases the cost of Boomerang Throwers and their upgrades by 5%
500
500
—
II
Increases attack speed by 10%
Increases attack speed of Dart Monkeys by 10%
500
500
—
III
1 free dart monkey to start, then every 10 rounds
You get 1 free Dart Monkey to start, and every 10 rounds
750
750
—
IV
Makes dart monkey darts explosive!
—
1,200
—
Causes darts to create a small explosion when they expire, which deals 1 explosive-type damage to up to 2 Bloons in its radius. For Triple Darts, only the middle dart explodes. Projectiles from Spike-O-Pult, Juggernaut, and Super Monkey Fan Club-transformed Dart Monkeys do not explode.
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2,950 Monkey Money in the mobile version and console version, or 
