Magic trap creation question

[Hurnn]

Ok so I want to make 2 different magic traps. The first will cast 2 second level spells, and second 3 second level spells. Both will have a caster level of five.

As near as I can tell the first one should take 20 days time and cost me 400 Exp and the second 30 days time and 600 exp is this correct?

[Hurnn]

Bumping to avoid reposting

[Diarmuid]

This depends if they are one-shot traps, automatic reset traps, if the spells involved require costly material components, etc.

Everything you need to price you traps can be found here: http://www.d20srd.org/srd/traps.htm#magicDeviceTrapCost

[Curmudgeon]

You're asking the wrong crowd, I'm afraid. You are incapable of making any custom trap until your DM is in agreement as to what they will allow in the trap.
When you and the player have agreed on what spells and other elements the trap contains, you can determine the cost of the raw materials for the trap and the CR of the trap.
So don't ask us; ask your DM.

[Thurbane]

I think it's safe to assume he was asking if his pricing was correct under the guidelines Diarmuid so kindly linked.

[Hurnn]

This depends if they are one-shot traps, automatic reset traps, if the spells involved require costly material components, etc.

Everything you need to price you traps can be found here: http://www.d20srd.org/srd/traps.htm#magicDeviceTrapCost

Forgot to say but yes they are auto resetting, and yes I read the rules I just want to know if my calculation is correct.

[ahenobarbi]

Forgot to say but yes they are auto resetting, and yes I read the rules I just want to know if my calculation is correct.

You probably should post your calculations then :smallsmile:

[Hurnn]

Auto resetting trap 1: Caster level 5 spell level 2 (2)

[500gp(5x2)]2 = 10000gp
[40 exp(5x2)]2 = 800 exp
material components less than 1 gp

Total 10000

10000/500 = 20days

Auto resetting trap 2: Caster level 5 spell level 2 (3)

[500gp(5x2)]3 = 15000gp
[40 exp(5x2)]2 = 1200 exp
material components less than 1 gp

Total 15000

15000/500 = 30 days

I assume you don't include the exp modifier otherwise the traps as listed make no sense being that the cr 3 acid arrow trap thats listed as 3000 gp and 240 exp would actually cost 123000 gp and take 246 days to make.

[ahenobarbi]

Yes, your math seems correct for your traps.

Following guidelines Acid Arrow trap would cost 500gp * 2 (spell level) * 3 (caster level) = 3000 gp (and 40 * 2 * 3 = 240 XP).

Note that traps are actually rather cheap. For example if you had a trap of cure minor wounds it would cost you 500gp * 1/2 (spell level for item creation purpose) * 1 (caster level) = 250gp and 40 * 1/2 * 1 = 20 XP. And it would heal 1 HP per round. Without limits.