Depending on the condition, and you say it is 90% new, combo edge, I would guesstimate 40-60.
Last week I saw three NOS Strykers, combo edge/black blade at a flea market, the vendor was selling them for 50 bucks. I would have bought all three but I have no use for combo edges or serrated edges.
IIRC, they came out about 12 or so years ago.