This [2] talks about swarmer software used by Ukraine.
$1k-$2.5k gives a lot of room for tech to avoid jamming - ir or visible light, ultrasound, for in-swarm comms.
And I wonder if the battery itself could be weaponized. We have seen that a very thin layer of the right material can turn phones/pagers very destructive.
[1] https://www.twz.com/news-features/ukrainian-companies-prohib...
[2] https://united24media.com/war-in-ukraine/ukrainian-drone-swa...