I tend to list a lot of wonderfully priced magic food/premium items in the item exchange but they sell out quickly. Here is the thread where I post screenshots of offer-lists or lists of auction house crafting items when there is a sudden large availability.

Sometimes I trickle out a trade here and there. My rates are as follows:

1 Magic Food Item can go for either:

50 common crafting resources. (Wood, stone, clay, etc.)

25 Uncommon Crafting Resources (Marble, amythest, etc.)

15-20 Rare Crafting Resources. (Rare stones/granite or vermillion.) 

(Batch Sold)

(Sold)

(Magic food for wood was here, but sold out.)

Price was: 1 magic food = 50 wood. (I've sold at least 15+ lots at this price.)

-I just think it's nice to know what other people sell things for, you should price what you feel like! :)

May 22: (Sold)

June 16: