Not sure where you are located, but I can't imagine anyone getting that amount of money for residential window installs... at least not here in NW Fla. Granted, this area is definitely on the lower side of the economic scale, but as I stated earlier, I used to install for WW and we were paid $50 for a standard window install. Even then, at that I sometimes felt like I was stealing... making $100+ an hour for window installs. That said, yes, it was on the low end of the rate scale for window installation, even here in NW Fla, but I was getting 70+ windows per week, so it was not a bad living, especially when you consider that the more windows you do, the more knowledge you gain and the quicker the install. For example, got steel casement replacements down to 45 mins from start to finish, aluminum in 30 and wood sashes in 15 unless it also had to be wrapped/capped. As for standard patio and entry doors, $150-225.
Recently here in Fla, the codes changed that now require either hurricane windows(alot more screws), or double pane with a hurricane shutter/protection system installed at the same time which requires more labor/time and thus a bit more cost for install.
I'm not berating you for what you can earn for the installs in your area, just pointing out that the rate he is being charged is not only going to attract 'day laborers' if that franchise also has well trained installers who are making a good living in this depressed economy.