Really? What’s cheaper? Oxygen is around $0.10 per kilogram in bulk. The only pure gas that’s cheaper is maybe nitrogen. I’m not sure liquid nitrogen is cheaper

Really? What’s cheaper? Oxygen is around $0.10 per kilogram in bulk. The only pure gas that’s cheaper is maybe nitrogen. I’m not sure liquid nitrogen is cheaper than oxygen, however, since the boiling point is significantly lower. What industrial liquid other than water is cheaper than liquid oxygen? What is significantly lower than $100/tonne?