Like the man says, you gotta know when to hold 'em and know when to fold 'em. Taking a flyer on those DS '99 Air Jordan IVs for $500 and hoping they won't crack probably isn't the best idea, but every once in a while it's worth it to spring for an auction with a questionably worded title or iffy photos, especially if it's an unusual shoe and not particularly expensive. Because some people truly don't know what they have and just want to clear out dad's old basketball shoes from the closet. Don't make a habit of it or anything and it should be OK.