About 1/2 of a 16 Gallon drum of RusFre Automotive undercoating

16 Gallon drums of this undercoating costs about $400. We have half of a 16 gallon drum left that just needs to be picked up. We used it for a variety of purposes on metal exposed to the salt air with good results but are getting this house ready to put on the market and need it out of the garage.