I went ahead and locked it for you, but do remember that you're only allowed one thread in the Exchange. So if you want to buy/sell something later one, you will need to PM a mod to unlock it for you. If you'd like, I can leave it unlocked and you can edit the first post and title to say that you're not selling anymore
Yeah! If you click on the Shops tab and then on the link that is above the map, you get a list of all the stores. So you can give it back to the sell-back store for 50% of the store price. :)