I haven't really followed nats items (besides checking chests a few times), but I do know that just because its a nats set piece (everything except the set weapon) it is very likely to sell for a few times more/can add another 0 to the price.
Don't know the base ranges of stats on nats helm so can't help you any further. Try scanning with the same amount of dex? Well nvm just scan the ah for the useful rolls (the % of fear+dex I guess), or wait till someone who knows more about this shows up here ^^.
Edited by Killerwolf#2579 on 08/08/2012 19:05 BST
just put on AH with bit start something like 10 mil and see where it goes, dont put B/O :P It has a nice dex, too bad not socketed and/or with crit chance. But still very nice.
Try and do search on AH for Armour > Helm > Legendary > Level 60 > Fear on hit that should get you mostly Nat's and a few HoC's.
You can filter down similar and see what they are listed for.
They are probably overpriced, so if you go a little under, if any sells it will be yours.
Threats of violence. We take these seriously and will alert the proper authorities.
Posts containing personal information about other players. This includes physical addresses, e-mail addresses, phone numbers, and inappropriate photos and/or videos.
Harassing or discriminatory language. This will not be tolerated.