Never tried the cereal. Anything with marshmellows is a big "no no" for me. I think they make the cereal sickly sweet.
I saw a box of sealed cereal on ebay, too (a few months ago, actually)! I don't even wanna imagine how the cereal would taste like. I kep laughing at the seller's warning: "Do NOT eat this cereal! It is for display purposes only!" LOL!!