An event gacha ticket costs $3. Giving some card reveal invites to consume them.

Marketing dude.

And about rewards, elite guard bounty is random, but i noticed better rewards with low level guards than higher ones (1.1M guards dropping only pero, lvl 7-21 guards dropping puddin).

And about that, with last reward i noticed how bugged was my bounty (only 2 rewards as support on high level guards, i wasted a puddin for nothing)