I hope I am posting this to the correct forum. I remember seeing an ad in the other major magic magazine about a year ago for the stool gag where the seat appears to drop and when the performer stands up the shaft of the stool is seen sticking up through the seat. It wasn't the Dick Stoner stool, this was a smaller stool and was only about $400 if I remember correctly. Any help on tracking this down would be greatly appreciated.
Also if anyone knows the origin of this effect that would be appreciated too.