Voodoo or not, i bought a 10 pack of Edding 500 permanent markers. Recomended marker for cd edging, since audioprism does not make theirs anymore. These dry completely black, not like sharpie. I am willing to let 6 go, music direct sells these for $10/each. Some crazy seller on ebay has them for $24/each another has a $26 listing and shows a 10 pack, but did not respond to my questions asking if it was a 10 pack or not. I got mine from Germany, where they are made. $5/each
Could be the cheapest tweak ever, at worst, you get one of the finest permanent markers made in the world today. You cannot lose!