And think, some people like to do LDoN's for exp, sometimes its easier especially on pvp servers to find groups where you dont have to worry about fighting for a little.
The potential is awesome, if you aa while making points its not too bad unless your EP'd. And its type 3 augs, you can throw a range 4 or haste 4 on this.
You pretty much buy the potential with many of the LDoN stuff. Tank gear somewhat excluded since you get great AC for the price. However, imagine this in the hands of say... a wizard looking for saves, int, mana and maybe HP. Eternal Ice Prism of Sense (Type 3, 1150 in EF), a Pristine White Sapphire of Sense (Type 2, 1150 in NRO) and one of the droped int augments. That will cost you a lot of adventuring yes, but you will get AC 12, 7 to 4 saves, Mana/HP 75, 16 to Int and 10 to Sta AND FT 2. Now if you kill in the high end PoP zones it's quite possible you will find and be awarded better gear dropping. If you however can't really get to that point in the game for some reason, perhaps you can't invest enough time to do raids that keep going long enough to get anywhere, this makes a very good piece that you have a chanse of getting.
A quarter of what you pay for on the LDoN stuff is stats, the rest is potential.
Not only does this have 3 slots, like Yalar points out, making it AWESOME once it is augmented, IT HAS 75HP and 75MANA, PLUS awesome saves.
For anyone in a smaller guild, this is uber gear, even prior to the slots being augmented.
Imagine a warrior with this mask, With a regen, or vengeance augment, plus some HP/STA augments. I know level 65s who are still wearing the Blue diamond cultural armor, and from that set, all but the RZ and Tribunal versions only have 25hp.
For my cleric, I'd love to have this, with the +10 wis aug, FT2 aug, and the +5 all saves aug.