What's so good about CoS for Necros?

[enjchanter]

Gazugi ring functionality from inventory - instantly worth 7k just for this
Instant cast unlimited invis - extremely convenient for mobility
Yes, helps somewhat with invising after fd
No longer able to get one without paying for it - a big reason it increased.

These things were a solid 2k item before the nerf so obviously when they suddenly become unobtainable through normal means (ie camping it) the prices rises.

I dont think it's worth 25k+
But I'd happily pay 10k for this item if I didn't already have one

I think the real question is why do elder beads cost more than 30k