man ebay is worse than china. they dont care what u do. and its not like ur selling anything that's fake, or against the law anyhow. HOWEVER, selling any type of nicotine on ebay i believe is not allowed... of all the crime on ebay, im surprised they don't permit the sell of something that's legal: cigarettes.
so i doubt you'll get away with posting an auction because of the nicotine. try it and see