I've been asking the same question. I don't know if the blem items are good or not.You never know it could be a huge dent in whatever you're buying or it could be a little tiny spot no one will ever notice.
I bought a Tama Iron Cobra jr. (hp200) about 5 years ago, and I'll never do it again. I knew going into it that it wasn't perfect, but it basically came apart everytime I used it. I finally was able to make it useable, but switched to the regular Iron cobra anyway. Just be careful.