I have a 100 # propane tank filled with propane like new condition. , tank cost $100 and propane $70, would take $70.00, gas is worth that alone .

is that 100 pounds or 100 gal?
# is typically pounds but I think they usually sell propand by the gal, but I could be wrong!

Tank has been sold, it was 100Lb. Thanks for the interest.