what a reasonable price range for...

[jjroth]

a WWII KaBar, stapled and stiched sheath, missing the retaining strap,
bright blade and rounded tip.
Stamped on blade: "kabar,Olean, NY"

[old-smithy]

the best place to get pricing info is EBAY, without seeing the item it i simpossible to guess so 0nothign to the sky is possible, although with damage the sky may be a lot lower than a mint one. EBAY has lots of sales and is a good indicator of what you can get for a blade at any time. Just remember two people in a bidding war can take a price way outside the norms.