does anybody know how much green depression glass is worth?

Answer 1

Somebody is still manufacturing "depression glass".

Do you know what it was originally and why it's called that?

Answer 2

Green is the least valuable of all the colors, I think, in any type of glass, because it is the commonest and easiest to find.
But the best way is to head to an antique store or your library and ask to look through a book on depression glass.