If I was closer and could pick up, $100 would be all I would be offering, there is not much solid wood in that and unless you can get a certificate of authenticity, a solid pen blank with clean wood would worth about $3 to $5 to those that don't run away when someone mention Pine wood.
Most of the wood would be more suitable for resin casting that solid blanks but again, anything "Pine" is never easy to sell...!
That's my thoughts...!
Good luck,
Cheers
George