I recently bought Fortress Maximus before the Christmas holidays for £525 box included 100% complete. Think I got a bit of a bargain was originally going to get the reissue as that is out in April time. Might consider selling him on if I need to could be a valuable asset in the future.
Here he is:
Hope this helps anyone with your decision, he is absolutely massive twice the size of Scorponok and has lots of interesting features for a toy of this type. Would however recommend maybe getting the reissue as he is just too expensive even at the price I got him for. Will have to sell on my Menasor/superion and lots of other Transfoermrs to make room and whill be on EBay in February time.