I've sold a bunch of stuff on ebay and if I'm not 100% sure of something I will state that fact in my description and ask (in my description) for input from anyone with better knowledge. Then I will revise it accordingly. What gets me, is people who try to "low-ball" me. I can't count the number of times someone offered me half of my asking price saying that was all it was worth. And then I get my asking price two days later.