Potion of Girallon's Blessing - cost?

[Brock Samson]

How much would a Girallon's Blessing potion cost? Also, I don't have the feat in front of me, but my character right now has a bite/claw/claw and the feat Multiattack, I'm guessing the extra claws would factor in under Multiattack?

[Iku Rex]

750 gp (level 3 spell)
http://www.d20srd.org/srd/magicItems/potionsAndOils.htm

I see no reason why Multiattack wouldn't work.

[Burley]

In fact, I believe there is a place somewhere in... Complete Arcane(?) that states that spell effects that give extra stuff (limbs, powers, etc.) can be used with feats.
Maybe I'm mixing lines together though...

Anyways, yeah. You can take Fly-by Attack, and only use it when you have Fly active, but you can still use it.

[Epinephrine]

I'm not sure why multiattack would matter. The spell makes all 4 limbs primary, so only the bite is a secondary - assuming your bite was secondary before, you're just gaining two more primary claw attacks.

If the bite were primary before, it isn't anymore - or perhaps you can choose which to use as primary - the 4 claw attacks (in which case the bite is secondary), or the bite attack (in which case the 4 claw attacks are secondary).