I've searched google high and low for this, and visited the ddo wiki pages several times too, but can't seem to find a definitive answer to my question, which is: How often do otto boxes go on the market for ddo? I was going to get me and a friend two of the heroic boxes, but i am low on funds as of this month. As is he. So, when can i expect them to be back in the market?

Also, just to be clear,I understand it's a little touchy to level up in such a way, but in our defense, we've played this game for about four years on my side, and two or three on his.

Many thanks for any answers, as i'm at my wits end trying to figure this out.