Okay, I just want to confirm all the limitation on the following magic items:
Potion/Oil
1. Max 3rd level spells.
2. Can have Metamagic feats built in.
3. The original spell's casting time can be no greater then 1 minute.
4. Oils can be used on objects or corporeal creatures.
5. Potions can only be used on corporeal creates that can consume the potion.
6. The spell must be have a valid target line.
7. Spells with a range of personal cannot be made into potions.
Note: There are prestige classes that allow potions up to 9th level. I'm going to have to assume said potions would be so rare as to be unbuyable. There are other items that do the same thing below.
Retail Cost: SL x CL x 50 GP
Scrolls
1. Max 9th level spells.
2. Can have Metamagic feats built in.
Retail Cost: SL x CL x 25 GP
Wands:
1. Max 4th level spells
2. Can have Metamagic feats built in.
3. Examples of wands with personal range are in the DM's guide, therefore, a wand can have a range of personal.
Retail Cost: SL x CL x 750 GP
Attuned Gem
1. Max 9th level spells
2. Spell must be able to target itself, or a creature within 5 feet.
3. Arcane Spells Only.
4. Can have Metamagic feats built in.
Retail Cost: (SL x 50) + (SL x CL X 50) GP
Skull Talisman
1. Max 9th level spells
2. Spell must target one or more creatures.
3. Can have Metamagic feats built in.
Retail Cost: SL x CL x 100 GP
Minor Schema
1. Max 6th level spells
2. Can have Metamagic feats built in.
3. No XP Cost to spell.
4. No Expensive material component.
Retail Cost: SL x CL X 400 GP
Runes
1. Max 9th level spells
2. Can have Metamagic feats built in.
3. Divine spells only.
4. Spell must be able to target that which activates it.
Retail Cost: SL x CL x 50 GP
Eternal Wands
1. Max 3rd level spells
2. Can have Metamagic feats built in.
3. Arcane Only.
4. No XP Cost to spell.
5. No Expensive material component.
Retail Cost: (SL x CL x 720) + 100 GP
Spellstaff
Since it is any spll you can cast, it is, in theory, possible for someone to take a scroll of spellstaff and UMD to make a spellstaff of a wizard spell. However, only the caster of the Spellstaff scroll can use a spellstaff, therefore you would never find it in a magic shop.
Infusions:
I'm going to limit myself to 3.5 magic items.
Staffs:
After much thought, the staff is intended to be created with multiple available spells. Therefore, for purposes of The Spell Book, they are not included. If I figured out EVERY possible combination of spells in a staff, I'd never finish. I'm only looking for objects that hold one spell.
Scepter:
Again, a scepter can hold two spells, and i'm looking for single spell use items.
Shalantha's Delicate Disk:
Frankly, this spell breaks the system. Any 5th level spell can be stored in a disk for 200 GP. That means, if you follow standard rules of calculating retail cost from base cost, any 5th level spell can be stored in a disk anyone can activate without UMD for 400 GP. A potion with a 2nd level spell costs 400 GP. From a game balance point of view, I simply cannot include them.
So, did I screw anything up?