The item is "unopened". We haven't opened the seal, so we don't know the contents.
The 5th and 6th photos are sample photos of the same price Mystery Cube(the contents of Gengar, 87 sheets).
The condition of the cards of sample photos was between Damaged and Excellent(PSA 5).
(Average is Heavily Played to Moderately Played(Equivalent to PSA 2 to 3).)
Judging from the position of the white line on the horizontal surface of the card lot, most of the cards are vintage cards.
It weighs between 138g and 145g, so we guess it contains 80 to 90 sheets.
Please see also another kind of MANDARAKE Mystery Cubes.
https://www.ebay.com/itm/155427616462
https://www.ebay.com/itm/155245552385
https://www.ebay.com/itm/155586713712