"What's the cheapest Carbon Capture system we can imagine - $100 per tonne?" Considering that I pay around a dollar a pound for bottled CO2 for horticultural u

"What's the cheapest Carbon Capture system we can imagine - $100 per tonne?" Considering that I pay around a dollar a pound for bottled CO2 for horticultural use and commercial CO2 is produced from methane. Someone could get fairly wealthy getting paid for removing CO2 from the atmosphere and selling the "undesirable" product for a profit.