Re: Good Black Eyeshadow!
Try NYX. They make a black e/s that I'm sure is comparable to MAC's Carbon. NYX e/s tends to be almost as good as MAC e/s. Plus, it's only $5.http://www.nyxcosmetics.com/Main_Pages/Profile_ES.htm
I'm sure if you went on eBay, though, you might find it a bit cheaper than that. I often will buy my NYX stuff (their Doll Eye mascara is totally my HG!) on eBay, just because it's slightly cheaper than retail. Although some beauty supply stores will sell NYX e/s for like $3 anyway, so either check out eBay or see if you can find it locally. HTH!