Well, I got a couple of prices. The dealership where I bought the Forester and bring it for service quoted me $399 for a Prest!ge* remote starter, installed.
Local Car stereo/alarm/electronics place (which looked busy and quite professional) quoted me $275 for a Viper installed...I forget which model, but it included 2 four channel remotes with lock/unlock, etc. so I wouldn't have to keep my factory fobs. If I wanted to keep my existing fob and just get an additional remote for the starter, it would be $199, but why would I want to do that?
* I don't know why ther forum won't let me type the name Pre$tige.
2006 Forester 2.5 X
L.L. Bean Edition
Regal Blue Pearl/SGM