Yeah, I definitely dragged my feet on picking up the Mummy sets too, until I found out about the 4-pack cancellation/hard-to-findness that's going on now. Then, randomly, my local TRU restocked the Imhotep and Princess Ankh-es-en-amon packs this week (they must have been lost in the stockroom or something)so I snapped them up. So glad I did too, they are great! So, if anyone has a TRU by them that is horrible about restocking it's shelves, and puts out months old figures randomly throughout the year like mine does, you may still have a chance to get them without using ebay...
Also, I just want to add, I would DEFINITELY be down for a Metaluna Mutant minimate, I will send whatever letter I have to for it lol.