They now sell it in a smaller amount to make it cost less, and Brian Kyle can send anyone the oil in case someone's older stock has dried a bit.
I think the problem is that some people use too much. Less is more, just a very fine dusting I think is best. Perhaps Ozzy used it like paint, which I could see causing a problem. I have used it on a number of items, and have found improvement. I am still too chicken to put it on Vacuum tube pins though.
As far as alternatives, I don;t know if anything like this is cheaper. All these type products use gold or silver particles, which are at high prices currently.