The anoying part about the tombs for Ilvl 70 gear is that the darklight equivalent is cheaper and easier to obtain. While one can actually "Sell" the gear they craft the profit margin is next to none due to lack of utillity the gear presents without heavy melding. People would rather just slap their darklight on and not worry about melding, especially for a few items that require 2-3 crafted tomb items.
It's insane who would spend 3000+ tombs on a single item when they could gear their entire character for almost as much.