Value of a Blackjack Mod. 5 knife

I've got a very nice, unused, with the box, papers and plastic sheathing Blackjack-made EK Model 5 Bowie-styled blade with wooden handles and cordura sheath.
What's the best guess as to its' current value? Shows an Effingham address, and doesn't include Desert Storm etch.
Really don't want to hear about "similar" knives or war stories about how some other knife worked better, just want to know ballpark value for a pristine knife.

Wow, guess nobody knows anything about knives, or else y'all are waiting to increase your post counts on someone else's posts.