I have an old Ballarat Brewing Kliderkin on the back of the ute ready to go to Willawong refuse dump tomorrow. It doesn't hold beer anymore, it's yours if that is what you are after.
HD
I use all of the above methods duri g the brewday, then every three brews I put it in the oven @ 160 deg.C for 30mins then let it cool before storing till next brewday.
I know that you said that it is a first generation BM, but what date did you buy it? This would determine the write down price seeing there appears to be no interest at your asking price.
Beers
HD