Create Magic Item Pricing doubts

[kalanafein]

Hi. I was thinking of creating a new item with enlarge person on it, but speaking with the DM, we are not quite sure if the calculations for the price are correct.

I was thinking about a shirt for the chest slot.
The DM said that as a base I should use the "Command Word" price, that is to say Spell level x caster level x 1,800 gp
The rules say that "A creator can create an item at a lower caster level than her own, but never lower than the minimum level needed to cast the needed spell.". Therefore the caster level could be 1, for an effect duration of 1 minute.
Following the table, it should be possible to limit the number of uses per day, dividing the price by (5 divided by charges per day). Is this IN ADDITION to the base price, or does it REPLACE the base price?

Assuming that it replaces it and that the item has 2 uses per day, the price should be:
(Spell Level (1) x caster level (1) x 1,800 gp) / (5/2) = 720 gp.
This should be multiplied by 2 if I buy the item instead of creating it myself, right? For a total of 1,440 gp.

Assuming that it is IN ADDITION to the base price, it should be:
1,800 gp + 720 gp = 2,520 gp
Multiply by 2 for buying it: 5,040 gp

Are these calculations right?
The prices of the 2 options are quite different. Which one is right?

In the end the item should allow the wearer to use enlarge person on himself 2 times each day, with a duration of 1 minute per cast and with a casting time of 1 full round.

Thanks for the help!

[Temperans]

Spell level 1 x Caster level 1 x Command word == 1,800 gp.
2 uses results in 720 gp.

This is the cost if you were buying the items, if you craft it yourself the price becomes 360 gp.

However, the most important rule is that you must compare the cost to similar items to avoid something being severely under/over priced. From trying to make a similar item (a ring) and searching around. The correct price for this type of stuff is less than 4k gp due to continuous enlarge person costing around that much. I feel like it should cost more than a wand that costs 750 gp for 50 charges.

[AwesomenessDog]

kalanafein wrote:

Following the table, it should be possible to limit the number of uses per day, dividing the price by (5 divided by charges per day). Is this IN ADDITION to the base price, or does it REPLACE the base price?

This is the last step in the overall calculation of the price. You take that 1,800gp X Spell Level X Caster Level and divide it by (5/number of charges per day), or more aptly, you can just divide by 5 for 360gp per use per day.

[Diego Rossi]

Ultimate Campaign wrote:

Pricing New Items

The correct way to price an item is by comparing its abilities to similar items in the Core Rulebook (see Magic Item Gold Piece Values on page 549 of the Core Rulebook), and only if there are no similar items should you use the pricing formulas to determine an approximate price for the item. If you discover a loophole that allows an item to have an ability for a much lower price than is given for a comparable item in the Core Rulebook, the GM should require using the price of the Core Rulebook item, as that is the standard cost for such an effect. Most of these loopholes stem from trying to get unlimited uses per day of a spell effect from the “command word” or “use activated or continuous” lines of Table 15–29 on page 550 of Core Rulebook.

[zza ni]

^this.
or you move into true strike shenanigans (level 1 caster and spell. 2000 for +20 to hit?)

but when you do look for a magic item that work like it. you can find that for 2,500 gp you can normally get a transmutation cloack of hedge wizard that give at will prestidigitation & mage hand, 1/day enlarge person and 1/day expeditious retreat all cast at 1st cl.

so i think it wouldn't be too much of a stretch to make a specific cloak that instead of casting the expeditious retreat give you one more enlarge person. you did say you want to have it 2/day right?

so it would be like
'Altered Cloak of the Hedge Wizard (transmutation) ' that will cost 2,500 gp to buy (1,250 to craft) and give at will prestidigitation & mage hand and 2/day enlarge person. and the crafting would look like:
Construction
Requirements Craft Wondrous Item, prestidigitation , mage hand ,enlarge person (maybe 2 casting?); the creator must have Spell Focus (transmutation) Cost 1,125 gp. caster level 1. so crafting dc is 6 (+5 for every ignored requirement beside craft feat).

it should cost less if you knock down the 2 cantrips, but im not sure by how much, since i'm not sure what factor of the total price they represent. and i have a feeling they were grouped as a sale pitch with lowered cost then the table would have had them at, so i would just leave them be (also at will prestidigitation is never out of place)