They have to tell you one way or another it's their legal obligation to do so, if they don't you can sue them because it's your right to know, then again I'm not sure because I never used ebay, sadly you have 2 paths, pay or hire a lawyer and take the legal route which for that amount of money even if you are right it's not worth it.
Take it as a hard lesson and next time read careful and if you are still not sure (or if it doesnt say anything) look on the internet for information or ask here in the forum, when I have to use a "shady web" I do a research beforehand, I know it sucks because one tends to trust those kind of sites like amazon, newegg, ebay even steam.