Also in tearing apart stuff I see some differences (Just making some out-loud type notes here)

So even a green/green board:
Some of them look densely packed with stuff.
Others seem sort of "thin" in their circuitry.. any difference in grade.

Example: I tore apart an old Cordless Phone- Board is densely packed.. gold tracings for certain
Tore apart a leap-frog little hand held game.. board looked sort of puny with circuits.

These have got to be different grades yes?