With touchscreens it may seem as easy as replacing a piece of glass (like a windsheild) but the truth is the hundreds of "tentacles" and "nerve endings" need to be reattached which makes for a tedious process and the huge labor cost. Many times there are problems down the line because they can never be attached properly or with the same level of precision as the original factory design. Everyone wants to recycle, but it's the labor that is the killer.