What are repair locations doing with broken LCDs?

Was wondering if all repair shops knew that their broken LCD assemblies for just about every phone (if the LCD is good) is worth from a few bucks on wards to $60+.

We purchase LCD screens back from the repair shops that we do business with and am still amazed at how many people have thrown away their screens and could have made thousands of dollars selling them out.

What do you do with your broken LCD screens?