User blog:SW8573/Couple of VERY cheap BTD5 tactics

Both tactics require Monkey Tycoon.

The Money Village
In the early rounds, you generally won't be able to afford a Monkey Village. However, you can afford it in later rounds. If you are ever in a dire need of money, what you do is this. The Towers that you generally buy early in the game will stay there for a while. Place a Monkey Village near it and sell that tower. Buy it again, placing it in the same spot. You will that after selling that Monkey Village, you will have gained a little profit.

Special Abilities
After using an ability, you can sell the tower after the ability has finished and buy it back again. Ability will have "finished" recharging.