Terrible. Here are the claims made in the ad copy (my comments in caps):
"After you finish
the performance, you can let the audience carefully check the dice (no exchange.)"
SIMPLY
NOT POSSIBLE WITHOUT MAJOR CLEAN-UP IN PLAIN VIEW OF SPECTATORS. EVEN WITH CLEAN-UP, YOU'RE STILL
LIKELY TO END DIRTY (WHICH CREATORS SAY, "SPECTATORS WON'T NOTICE.") UTTER GARBAGE.
"You
can ask the audience to throw the dice into the cup and get the number you want. You can also let
the audience shake the cup to get the number you want."
YOU CAN, BUT YOU'RE TAKING A MAJOR
RISK. THIS IS NOT A STURDY PRODUCT/SYSTEM.
"You can use this dice in the cup, on the
table, in your hand."
YOU CAN ALSO PUT A LOADED GUN IN YOUR MOUTH AND PULL THE TRIGGER, BUT
I WOULDN'T RECOMMEND IT.
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This is sloppy, poorly thought out magic.
There are a million better ways to force a number. Please save your money.