The Melissa EA20 has a very wide selling range. They typically seem to sell in the 4-$500 range. However, I know of one that sold on E-bay, in a auction, at just over $1,000.
FWIW this is the blue book info, a bit dated, but still close.
EA20 X Melis...
FWIW this is the blue book info, a bit dated, but still close.
EA20 X Melis...