Sold a few on the first few days but haven't really focussed much on those since. Perhaps I'll start to do more, now I have quite a lot of the recipes.
I'd just be happy if disenchanting ToT LFR loot gave a small chance of Haunting Spirit, so over time I could start making money from the epic patterns we're learning. With the current prices of hauntings there's no way someone will pay 80k to 100k for an i522 item, so there's no real money to be made on these yet.
Maple.