"The co2 extraction is done with a critical extraction machine, they're more like 100k and it's what they use to make any essential oil from plants with"

CO2 extraction (I wrote the articles on the Lycaeum YEARS ago regarding this,) is done the same way as any super-critical pressure-based solvent system. An extraction system can be built for $2 and some change, then go to the paintball store, pick up a tank of CO2 for a hundred bucks, drop $15 on an adapter valve and hose and clamp, and you're set to go.