Microwaves and ice cubes - A complete scam.

Not to mention this is always how these sort of boxes work.
Even when they do post a partial list of what's in them the emphasis is always on partial.
Anyone who's seen a normal gachapon should know by now that they advertise the good stuff and fill 95% of those with useless crap because the whole point of them is to be a gamble not a sure thing.

Remind me to write a complaint to the lottery commission that my powerball ticket didn't give me a multi-million jackpot every time... clearly they scammed me.

Remember the first ever gold gachapon box event? Hardly a waste. 75% of what you opened was revenue put to opening a new one.

Decided to test your 95% theory, although this is my 2nd, I thought it would be funny if I actually got it for this sole purpose.

 Spoiler

I agree, should have made it "A complete waste".

@SaptaZapta

Not if you do not need the buttons. It's 15%, not 60, not 100, not 70. Going to take a lot more then 1 to even do anything with them.