I look for Black Americana on Ebay only vintage of course and it is a hot seller!! I am always out bid on this type of collectible and I buy a wide variety of different type of vintage and antique items. So what I have to do is make a sniper attack! I put the items I like in my watch list and in the last 30 seconds of the auction put in my highest bid! It doesn't always work because there are many other snipers out ther like me that come in and get me in the last few seconds! Arrrrrgh!
You do have to know what you are looking for because I noticed alot of repros on Ebay. Mostly the cast iron stuff and the cookie jars. Alot of sellers try to pass it off as vintage or they don't tell you either way in the listing hoping to trick some folks. So beware!