Darkskull vs. Lord's Banner of the Crusades

[Shek the Unwise]

A Darkskull is a permanent mobile unhallow, with a permanent, say, Freedom of Movement tied to it. What's more, it can be tied to your belt and costs 60k gp.

A Lord's Banner of the Crusades is a permanent mobile hallow. It appears ( http://paizo.com/paizo/messageboards/paizoPublishing/pathfinder/pathfinderR PG/rules/aPGMagicItemsLordsBannerOfCrusades&page=1&source=search#0 ) to not grant a permanent spell effect. It also takes a pole to hold up and costs 100k gp.

Is a Darkskull just cheaper and better due to evilness?

[Shek the Unwise]

I'm still debating this one. I've got a player clamoring to craft a permanent hallow item, and we've got these contradictory examples of what the cost should be.