Hard to know, probably varies a lot with where you are and the details of the installation. Best way to find out is to get a couple of estimates from providers in your locality, if they are all close to each other that's probably about right.

delete duplicate

This post was edited by rwiegand on Fri, Oct 4, 13 at 14:17

Ericamd:

I'm installing a 6' hurricane proof slider for a friend for 3K.