You're quoting a very old thread.
Crone is a sweat trade in large amounts. He buys sweat at 1.8 ped/1000 bottles (1.8ped/1k) at this time. And sells for 1.9ped/1k bottles.
If you have enough patience or luck you can sell "small" quantities for a better price. Also there's an event organised bi BIG industries where they buy 2k sweat for a good price from anyone.
Prices vary at the moment between 1.5-2.5 mostly with exceptions in both directions.