Help me price my magic items!

[Dyrynify]

I really need help placing a gp value on these magic items. Help me please, you magnificent magic people!

Horn of Lightning: Powers - Use activated, Lightning Bolt 3/day. Command word, Dimension Door 1/day.

Spear of Dragonfire - +1 spear Powers- Continuous, +2 strength, resist 5 fire.

[yougi]

Horn of Lightning: 31,320

CL5, 3rd level spell, 3/day: 5*3*1800*3/5=16,200
CL7, 4th level spell, 1/day: 7*4*1800*1/5=10,080

Second ability is at +50%: 16,200+10,080*1.5= 31,320gp

Spear of Dragonfire: 11,425
+1 spear: 2000gp
+2 Strength: 4000gp (assuming enhancement bonus)
Resist Fire 5 (from Greater Piwafwi - Cloak of Elvenkind): 2,750gp

4000+2000*1.5+2750*1.5= 11,125

11,125+ 300gp for masterwork = 11,425gp

[Dyrynify]

You rock! Thank you for dong what I should have done but hate doing because i am bad at it!

[Yuki Akuma]

Horn of Lightning: 31,320

CL5, 3rd level spell, 3/day: 5*3*1800*3/5=16,200
CL7, 4th level spell, 1/day: 7*4*1800*1/5=10,080

Second ability is at +50%: 16,200+10,080*1.5= 31,320gp


The Horn is a slotless item, so it should cost double.

Also, use-activated is × 2000, not × 1800.

You also did the math for adding the second ability wrong. No you didn't, you just wrote the equation ambiguously, my mistake.

All told, it should be 69,600 gp.

[(5 × 3 × 2000) ÷ (5 ÷ 3)] × 2 = 36,000

([(7 × 4 × 2000) ÷ 5] × 2) × 1.5 = 33,600

36,000 + 33,600 = 69,600.

[Slipperychicken]

The Horn is a slotless item, so it should cost double.

Does occupying your hand while you use it count for magic items?

[Yuki Akuma]

Does occupying your hand while you use it count for magic items?

I... don't think so?

Also the rules for adding effects to existing magic items are so needlessly complex.

I am also fairly sure that the +2 Strength and Resist Fire 5 should cost extra due to not being on the right sort of item for those effects but I can't remember where that modifier is.

[Biffoniacus_Furiou]

Using the sidebar on DMG page 288, we see the standard magic item slots and what effects are available in those slots at the normal cost. Held items do not appear on this list, so held items have no affinity for passive item effects on a character, such as an Enhancement bonus to an ability score or an elemental resistance. If it were on a wondrous item, these effects would cost 50% more than normal.

Now look at the sidebar on DMG page 282. Under Multiple Different Abilities, we see that adding an additional effect to a slotted item increases that effect's cost by another 50%, so this would actually double the +2 Str and Resist Fire 5 on the spear if it were a wondrous item and occupied a body slot.

Since a held item does not occupy a body slot, wondrous item effects added to such an item will automatically have their prices doubled per Table 7-33 on DMG page 285. You can find basic item effect prices such as an Enhancement bonus to an ability score and Energy Resistance 5 on MIC page 234, but these are the prices for adding the effects to a body slot that has an affinity for them. For an unslotted item such as a held item, the prices would be doubled.

That means the Spear of Dragonfire would cost 2,301 gp (+1 Spear) + 8,000 gp (+2 Enhancement to Str, doubled) + 8,000 gp (Fire Resist 5, doubled) = 10,301 gp total. The cost to create it would be 5,000 gp, 400 xp, and 301 gp for the masterwork spear.


For the Horn of Lightning, it doesn't occupy a body slot so the +50% cost for secondary effects does not apply. If the abilities were similar, the second ability would actually be at a 25% discount per the sidebar on DMG page 282 under Multiple Similar Abilities.

Another thing to keep in mind is that a single item has only one caster level, and all abilities on that item are calculated based on that caster level. The minimum caster level for Dimension Door is 7th, so the entire item would be at a caster level of 7th. That means its total cost would be as follows:

Lightning Bolt 3/day use-activated: 3rd level spell x 7th level caster x 2,000 gp x (3/5) = 25,200 gp
Dimension Door 1/day command word: 4th level spell x 7th level caster x 1,800 gp x (1/5) = 10,080 gp
Total cost: 35,280 gp