Since spell templates pretty much fill the same role in AU as metamagic does in D&D, I figured AU could use something that fills the same role as metamagic rods as well: template staves.
Most spell templates do not have a level increase, however, but are instead balanced with monetary costs or laden spells. Since you can use a higher-level slot to get two lower-level ones which you then use for a laden spell, I have chosen to consider templates with a cost of "laden spell" the same as rods granting a +1 level feat (e.g. Extend). The monetary cost is considered a material component, which increases the market price and cost to create by 50 times the cost of that component (since the items are limited in uses per day). This gives us the following costs:
(Just hoping that table shows up properly...)
Item stats: Strong (no school); Caster level 17th; Craft Constant Item, access to the template in question (see the individual template descriptions); Market price and cost to create: see above.
Unlimited staves
It should be possible to make metamagic rods or template staves that don't have the limitation of only be usable 3 times per day. By reversing the "daily charges/5" formula from the item creation guidelines, we see that this ought to increase the base price by two thirds, or 67%. For template staves, this should also increase the component cost to the double (because unlimited items require 100 instances of components, while daily items only need 50). For simplicity, just double the entire cost (including XP).
Most spell templates do not have a level increase, however, but are instead balanced with monetary costs or laden spells. Since you can use a higher-level slot to get two lower-level ones which you then use for a laden spell, I have chosen to consider templates with a cost of "laden spell" the same as rods granting a +1 level feat (e.g. Extend). The monetary cost is considered a material component, which increases the market price and cost to create by 50 times the cost of that component (since the items are limited in uses per day). This gives us the following costs:
Code:
Template Level Comp. Lesser (up to 3rd level) Regular (up to 6th level) Greater (up to 9th level)
cost cost Base Create Market Base Create Market Base Create Market
Acid 0 20 1,500 1,750+60XP 2,500 6,000 4,000+240XP 7,000 13,500 7,750+540XP 14,500
Air 0 15 1,500 1,500+60XP 2,250 6,000 3,750+240XP 6,750 13,500 7,500+540XP 14,250
Blessed 0 0 1,500 750+60XP 1,500 6,000 3,000+240XP 6,000 13,500 6,750+540XP 13,500
Corrupted 0 0 1,500 750+60XP 1,500 6,000 3,000+240XP 6,000 13,500 6,750+540XP 13,500
Cold 0 25 1,500 2,000+60XP 2,750 6,000 4,250+240XP 7,250 13,500 8,000+540XP 14,750
Earth 0 25 1,500 2,000+60XP 2,750 6,000 4,250+240XP 7,250 13,500 8,000+540XP 14,750
Eldritch +1 0 0 1,500 750+60XP 1,500 6,000 3,000+240XP 6,000 13,500 6,750+540XP 13,500
Eldritch +2 Laden 0 3,000 1,500+120XP 3,000 12,000 6,000+480XP 12,000 27,000 13,500+1,080XP 27,000
Electricity 0 30 1,500 2,250+60XP 3,000 6,000 4,500+240XP 7,500 13,500 8,250+540XP 15,000
Enemy Bane1 0 0 1,500 750+60XP 1,500 6,000 3,000+240XP 6,000 13,500 6,750+540XP 13,500
Fire 0 20 1,500 1,750+60XP 2,500 6,000 4,000+240XP 7,000 13,500 7,750+540XP 14,500
Permanent2 +3 0 15,000 7,500+600XP 15,000 60,000 30,000+2,400XP 60,000 135,000 67,500+5,400XP 135,000
Programmed +3 0 15,000 7,500+600XP 15,000 60,000 30,000+2,400XP 60,000 135,000 67,500+5,400XP 135,000
Psionic Laden 0 3,000 1,500+120XP 3,000 12,000 6,000+480XP 12,000 27,000 13,500+1,080XP 27,000
Sonic 0 spec. 1,500 850+60XP 1,600 6,000 3,100+240XP 6,100 13,500 6,850+540XP 13,600
Subdual 0 0 1,500 750+60XP 1,500 6,000 3,000+240XP 6,000 13,500 6,750+540XP 13,500
War +2 0 9,000 4,500+360XP 9,000 36,000 18,000+1,440XP 36,000 81,000 40,500+3,240XP 81,000
Water3 0 100 1,500 5,750+60XP 6,500 6,000 8,000+240XP 11,000 13,500 11,750+540XP 18,500
Wild 0 0 1,500 750+60XP 1,500 6,000 3,000+240XP 6,000 13,500 6,750+540XP 13,500
1 Must specify creature type.
2 The wielder must pay for the XP cost of the permanent spell, 500 times the original spell level.
3 The spell must still be cast on or in a large body of water.
Item stats: Strong (no school); Caster level 17th; Craft Constant Item, access to the template in question (see the individual template descriptions); Market price and cost to create: see above.
Unlimited staves
It should be possible to make metamagic rods or template staves that don't have the limitation of only be usable 3 times per day. By reversing the "daily charges/5" formula from the item creation guidelines, we see that this ought to increase the base price by two thirds, or 67%. For template staves, this should also increase the component cost to the double (because unlimited items require 100 instances of components, while daily items only need 50). For simplicity, just double the entire cost (including XP).