Favored Trades (BTDB2)

Favored Trades is the 4th upgrade of Path 3 for the Monkey Buccaneer in Bloons TD Battles 2. Like its BTD6 counterpart, it generates money, but it gives +100% more income than normal to account for the shorter rounds, and the upgrade cost is higher to account for the better income generation and to offset against the potency of extra sellback. At the end of each round, it generates $1000 instead of $500.

It costs $6,000, and is unlocked with 10,000 XP.

Summary
The main niche Favored Trades has is its increased sellback on towers. Because it increases sellback value from 70% to 80%, it enables you to preform ability micro strategies more cheaply and efficiently. Below is a list of abilities that are notable for being paired with the reduced sellback, and these strategies can be done by using their abilities, selling, then rebuying them to reduce the cooldown or use it again immediately, depending on if the ability has an initial cooldown or not.

Notable tower synergies with Favored Trades:
 * Plasma Monkey Fan Club can have its duration doubled in order to provide excellent BAD popping power, especially when paired with Super Brittle or  Glue Strike/Glue Storm.
 * Blade Maelstrom/Super Maelstrom will shred lower class blimps apart quickly and can be used as a safeguard for rushes, especially due to it's cheap price relative to other microing strategies.
 * First Strike Capability can be used to take down Fortified BADS quickly and deal with it's children.
 * Monkey Pirates/Pirate Lord can take down multiple fortified MOABs, BFBs, and DDTs in one go. The latter even harvests cash as well from defeated blimps in order to make up for the microing cost.
 * Ground Zero/Tsar Bomba has a particularly strong synergy as they can destroy entire rushes of blimps and bloons alike, being able to render most MOAB sends worthless. It can even be used to continuously damage BADS if out of options late game.
 * Pop and Awe can be used for for continuous map-wide stun coverage, particularly helpful to buy some time to micro other towers or to take a breather.
 * Tech Terror/The Anti-Bloon can decimate entire blimp hordes with ease, albeit there are more cost effective options.
 * Legend of the Night has the incredible ability to reset it's black hole cooldown again and again, causing an infinite amount of even Fortified BADS to be defeated continuously when timed right. However, it is incredibly expensive, costing around 60k per ability use.
 * Spike Storm/Carpet of Spikes can coat the track in a thick layer of spikes that can tear MOAB class bloons apart and can be enough to handle BADS when spammed enough.
 * Call To Arms/Homeland Defense will provide a much higher uptime for towers, causing immense power to last continuously.

Tips

 * It is helpful to know how much each total cost it would take for you to micro each ability to make sure you know how much you are paying per ability use. For example, selling and rebuying the Tsar Bomba will cost around 8.5k per use. Make sure you have enough money hoarded up to support continuous micro.
 * On its own, it is incredibly weak, and is essentially a support tower. Make sure to use its sellback to the best you can, as selling is more important and viable in this game compared to BTD6.
 * Favored Trades costs roughly the same as its BTD6 counterpart in this game, as its collective costs are equal in cost to the equivalent BTD6 tower.
 * However, it produces twice the cash from that game, meaning an overall buff to the tower.
 * Just for the upgrade itself, Favored Trades pays itself 5 rounds sooner than in BTD6, specifcally BTDB2's Favored Trades pays itself in 6 rounds compared to BTD6 11 rounds.