Is there a way to extend an eidolons range?

[Senko]

I'm putting together a broodmaster and because of the evolution cost I'm thinking of having them act as messengers. However an eidolon gets unsummoned after only a short distance so I'm wondering is there a way to increase that range? Preferably to anywhere in the same plane.

[Weirdo]

Unfetter works, but duration is only 10min/level.

I don't think there's a magic item version of it, but if you need longer duration a GM might allow a continuous function item for a couple thousand gold (pricing formula suggests 3K, which seems fair - 5K at most)

[Senko]

Weirdo wrote:

Unfetter works, but duration is only 10min/level.

I don't think there's a magic item version of it, but if you need longer duration a GM might allow a continuous function item for a couple thousand gold (pricing formula suggests 3K, which seems fair - 5K at most)

Ok thanks guess my next postings in the house rules section.

[Azten]

I think there might be an archetype, but I'm not sure.