Most jobs are priced by a given quote for that specific job.
Also, the more, the cheaper! Quantity discount will save you money.
A couple guidelines to go by if you are looking for an average estimate:
Window Screen- New Screen material - About $25
Door size/Patio Slider - New Screen material - $60
We also build custom screens to size! Call for a price as they range from size, color, thickness, attachments, and much more.
This pricing gives you a general idea, but remember every window and every screen is different.
There are many different manufacturers out there so be sure to call and get a free estimate for your job!