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Saw it at (I think) the NAB show the year it was introduced $1500. Is the price I remember.
I do have to say it was SPECTACULAR. Not just different numbers and letters but full color and the Rainbow attract mode was dazzling.
The Vegas joke for Comdex was "They come with one white shirt and one twenty dollar bill - and never change either one"
And because tech people know the value of a dollar - they would close all the casino buffets - you had to go to a restaurant instead.