Discount

Discount is an "attack" behavior characterized by providing a set, non-extrapolative cash save/gain. It is part of the damage types family. All "attacks" with Discount guaranteed to be of Passive type and accompanied with Target Tower(s).

Discount is represented on Bloons Wiki as, the upgrade artwork for Monkey Business in Bloons TD 6, as this depicts a price tag that is common on items that are being discounted. There is a subset of this called Commerce Discount, represented as the upgrade icon for the Monkey Commerce in Bloons TD 6. It is distinguished by Bonus Income and its subsets because Discount only provides a very specific amount of cash save/gain without extrapolative potential. This is especially the case because Discount is not banned on CHIMPS Mode.

There are only three unique upgrades that provide Discount and its subsets: Monkey Business, Monkey Commerce, and Favored Trades. Favored Trades is classified as such because its property of bonus sellback potency is considered non-extrapolative cash gain. Favored Trades technically can provide bonus sellback potency, but sellback is normally banned on CHIMPS and can only make effect on said mode if selling is enabled or using the "illegal strategy" with Arctic Wind land platforms.

Support Sacrifice Sun Temples and Support Sacrifice True Sun Gods provide buffs that are separate buffs in their entirety, but both can provide Discount too.

The only tower type that cannot gain a discount are Paragons.

All "attacks" require an upgrade to Discount, except the BTD5 Monkey Village.