Installing 2 exterior doors

[Lorne]

We have a sun room with a front and rear door.
The doors are mobile home style storm doors with vertical sliding glass in the bottom half, not standard exterior doors.

For added security we want to add standard doors and maybe use the existing doors as storm doors if room permits.

Question;
Would a contractor/handyman add to the price of each door to boost profit or charge what he paid for the doors?
If so, would it be better to buy them my self for him to install?

The original owner of this house built the porch room with what he had available back then, 1987.
This sun room is standard home construction and not the aluminum/glass type and is part of the house. Hope I'm making a good picture of what it looks like.

Oh, how's this?
http://picasaweb.google.com/waterslaw.w ... 8982947586

[Greg]

Contractors here usually mark up their costs to cover having their money tied up. Most will do just a basic install of your door. I would do some shopping and buy the door you want and have him install it. Greg