[hcobb]

Working through all of the references here.

Note that the arrow itself costs $10 (fine) + $60 (branded) + $200 (weapon poison) so use the highest DX archer.

By ITL72: "Arrows may be enchanted or poisoned."

By ITL147: "Weapon Poison: May be used on any edged weapon"

Ergo arrows are edged weapons and so

ITL123: "A cutting weapon can also be made of such good metal that it does either 1 or 2 extra hits of damage."

Are edged weapons the same as cutting weapons? Assuming as much.

Therefore a +1 damage arrow is $10, unless it's also silver.

ITL158: "The Brand enchantment, cast on an arrow, creates a reliable flaming arrow which will remain burning for a minute after it is fired."

The damage from a branded arrow isn't given here so we apply:

ITL162: "A missile weapon may be enchanted so the arrows from it will flame. The flame adds 1 point to the damage from an ordinary bow, and 2 points to that done by a crossbow."

So for $270 have a poisoned fine arrowhead attached to a flaming shaft, right?

Of course Goblins would harvest natural poison (for "free" ITL125, only 1d damage) and would have a Goblin Sorceress who casts Brand (for "free"?), and her production rate should be about the same as the quiver of +1 damage arrows their Master Armourer makes each week. (as per ITL123)