Quote Originally Posted by Unregistered View Post
It looks like you can only exchange for just 1 copy because the price changes each time. So you exchange for one, that gets replaced with the next one at a higher price, then you exchange for that one, then that gets replaced, and so forth, until the aforementioned totals.
^This

Which makes the SSR Gun special cause it's listed as 4 copies (but still is the 2nd most expensive thing to get all of, first being the 3000 magic jewels you can trade for)