On my server Netherweave stacks go for a minimum of 5g, it's been that way for ages.
At that price, the cost price of Netherweave armor is:
Robe: 13g
Boots: 10g50
Pants: 9g50.
Almost everyone who lists these items does so for 4-5g. It's nothing new that people sell things for far less than it costs to actually make them. (They could be selling the raw materials, if they farmed them, for a lot more.)
What really gets me is that the Netherweave set is BETTER than some of the blues of about the same level, that go for 30-60g. I've seen a blue item that was a higher level item than the Netherweave, yet it had less armour, less stat points, less magic and healing bonus, and less set bonuses. It was going for 30g, while the people who had listed the Netherweave items had put them on for 4g
When the Netherweave items aren't as good as the blues, they are at least almost as good, and yet the blues are going for 30-60g, while the Netherweave is going for 5g.
For pities' sake people, here is a perfect opportunity to make a modest profit from some great armor, by adding up the cost of the ingredients, adding on the cost of listing the item, then giving yourself a nice little profit margin.
If you are listing for 24 hours then the list price is about 1g70. That means that listing Netherweave items for 15 to 17g, depending on the item, gives a nice little profit of roughly 2g. While still being half the price that people are prepared to pay for the blues, which are only a little bit better, or aren't even as good.