Back in 1991, I was running a special trade-up sale on the Ultrachip and offered a discount of $10 for each old unwanted chip sent in with the order (I think there was a limit of 4 or 5 per customer). The deal lasted for a month, I believe was the month of December.
By the time it ended, I wound up with dozens of chips, some stock, most aftermarket, and put them in a big pile. Took a picture of it. I lost the picture over time - this was before everything went digital - boy I wish I still had that image. Used it in an ad, where the Ultrachip was at the top of the heap. It was a pile about 6 in. high and about a foot in diameter!
Gee, I'll have to look to see if I still have that negative....