I sold my used one in pa for 400 dollars but it was less than a year old, still had warranty, came with extra bags etc...as far as chamber with the yellow ring around them, i found they leak as well too, probably not as much but still leak a little. Not everyone uses their volcano on a regularbasis so there might not be a bunch of repair work that needs to be done if it wasnt used that much.
My buddy still has his volcano, which is about 6 years old as well, he barely used his though and it still functions as good as mine before i sold it.not sure if hes sold it or still selling it but i believe he wanted 250, and is inPa...what area are u located in, kinda makes me curious...
P.s. if your interested in the volcano, i would definately recommend you checking out the vivape 2, fills bags and does whips like SSV, extreme etc. taste is sooo much better than practically any vape ive ever used and right now yiu can get it for 299 with their "christmas" special...not trying to change your dream of owning a volcano but theres better out nowadays