I have 2 20Lb CO2 tanks for sale in Columbus OH. (Pictures coming)
1 - 20 lb, empty, expired hydro - $50
2 - 20 lb, 12 lbs co2 left, good hydro - $70
The talked to matheson gas and they said they would swap the tank for the cost of a fill. These were both picked up on a long road trip through a gas station that was closed (Via craigslist). Will ship at cost but tanks will be emptied first.