According to Sean K Reynolds (FRCS author), there is no such armor. It was turfed due to balance concerns.
#1: It costs more, since only drow can use it. So now, drow are weaker in combat (since they can afford fewer magic items). And drow are known for carrying lots of magic items.
#2: It's cheaper, because it breaks down in the light (a serious limitation), and won't last more than about a month away from the Underdark. So not only do drow get more powerful armor than they should based on their CR and Hit Dice, but the PCs don't even get to use that sweet armor when the drow die.
Unbalanced.