#Argon is many times cheaper than #xenon (the most common, and expensive, propellant used in #HallThrusters) and #krypton (the propellant #SpaceX used in #Starlink V1 and V1.5 satellites) https://techcrunch.com/2023/03/03/spacexs-acquisition-of-swarm-is-paying-off-with-new-starlink-thrusters
