About $8-10k ( incl electricity from house) for a proper exterior one 8 years ago, no regrets. Great experience with pooners. I've seen cheaper but they are doors that are meant to be used for a garage ie internally for most of the mechanical stuff. So don't hold up as well. Our neighbor has one, but everyone else in the alley has used Pooners.

Pooner and son. They did smash our sewer line and then concrete it up without telling us. Didn't realize what had happened until sewage started flowing into our house.

Ours was $8K from Pooner & Son two years ago. He is fantastic.

A contractor told me it's about $5k

http://www.popville.com/2010/01/dear-pop-central-air-and-roll-down-door-installation/

I'm also interested and found this while searching on google. Scroll down for Pooner & Son

Depends on size (does it need to be custom) and quality. $8 to $12k probably

10 years ago when we put one in it was $5k. Overhead Door Company.

Increasingly, all the cedar rear gates in our neighborhood are being replaced by roll up doors as rear yards become parking pads. Out of interest, does anyone know how much those roll up doors cost? there is no garage, just the door.