One thing that I realized today. I got a few pieces back today that had been hanging in a bar for sale for about 3 years. They were done with prismacolor markers & there were fairly faded, I was very disappointed. I don't know how lightfast copics are, but if the have the same lightfastness as the prismacolor, they really aren't worth it. They weren't hanging in direct sunlight, but they definately looked like they had.