A factory reconditioned Edge LE is usually priced at $4K by Gerber. Your guess on a unit with 400 hours on it would be is as good as mine. Probably around $2500. I would guess about that for the Envision 375 as well. With Omega software and whatever inventory you have of foils, the package should be worth somewhere in the $5K to $7K range.
FWIW, I just sold a 1998 Edge LE in working condition by itself and after nearly a year with no offers ... for $750.