Photo doesn’t open for me. Anyway, what about the question of the weight of that number of bills?
I’m guessing that they are calling them “$100 bills” because that is what is printed on the front. They appear to be fake gag/practical joke notes— looking real enough from a distance, but once you pick it up and look at both sides, would see it was obviously fake.
A US bill on legal printing stock weighs about a gram. They claim $1.3 million in 75 boxes...about $1.25 million per box. That’d be 12,500 bills, if they use the $100 denomination. 12 and a half kilos a box?