selling glass pieces

Do you mean factory-sized sheets of about 2 ft by 3 ft? Or smaller? Or scraps (leftovers) from projects?

It will depend on the color, texture, manufacturer, quantity, and the mood of the seller.

They are mostly 12 x 12 pieces or 6 x6 pieces and a few pieces leftovers from scraps. They range in all colors from clear through the spectrum up to dark browns. Different textures, manufactures, etc. Jane

I sell a few pounds on ebay from time to time.

packing on sheets is tricky although a pound of feathers weighs as much as pound of glass, it does not many sheets of glass to become a "heavy" package and packing gets to be a major time consumer.

the bidders set the demand, you set a minimum, sometimes I am surprised by the top other times by the bottom.