I purchased this and a lot of other items from Dr. X about a year ago. It is just like the one in the current Stevens Magic catalog that retails for $195.00. Mine is in pristine condition but does not include any instructions.
Here's the effect:
Toss the dice into the cup, shake them up and throw them out! You are a sure winner! You control the dice every time. This special custom-made cup comes complete with five special dice to roll 4's, 5's and 6's.
I'll let this go for $150.00 postpaid in the US or Canada.
Diamond Jim Tyler
5624 Sundance Drive
The Colony, TX 75056