My SBAD is experiencing a serious flare-up, and I've just finished looking through nearly every brush review. One thing I noticed is that even though there is a rank for the price no one explicitly states the price of their brush. It's not a major problem as I can just google it and come up with an approximate price range. But, why not just state how much was paid for it? I'm assuming it's an etiquette thing, but just wanted to hear others' ideas on why this is so.