Hm, it's 33k and change from the shop, not sold out... So usually I'd say 50% of the price. Drop it down a little bit for an even number and I'd counter offer at 15k (and tax).
Highlighting the shaman items still with the added lax, open for offers on all of it. Also, I'd realllly like to get rid of my typhon blood... so decent offers will be accepted.