The first I’d treat exactly as a Loyal weapon (Exploits ~79) based on the tip’s weight, with special effect that you throw with Polearm skill have a staff in the meantime. 3-5 seconds is too slow to matter in combat, it basically becomes a crossbow.
It’s a halberd, so you should still have the axe and hook left if you shoot the spear point. So $15,000?