Compressed gas cylinders

I understand that you don't want to fill these tanks, you just want to try and make some money. We are all on the same page and that is what makes this sight good, people helping each other to do just that. I'm only suggesting that if you know that these tanks can be serviced (refilled) you have a greater chance of selling them.

So as others had said, it would be best to check with your local gas supplier as they will have the most input on the value!