A few years ago my company decided to get all new printers and throw away their old DOT MATRIX ones. I got about 20 old dot matrix that I then sold on Ebay for about $60.00 to $100.00 each.
Then the company realized the horrible mistake they made and offered to buy them back. I had only six left and I offered to sell them each back for $200.00. SOLD. I could have asked $1,000 for each and they would have paid.
I did not know this at the time, but those DOT Matrix printers, could print in color and originally cost $20,000 each or so I was told. Man I was a retard.