This here is an estimate per window that took me some time to get my hands on. 11-2009 UPDATE I posted this approx. 1 year ago and can now say that I had to immediately cut these numbers in half in order to compete. Take these estimates as a ceiling/MAX.
Hung Window $8- 10 Single or double hung , window lifts open upward. 2 Lite Sliding Window $8-10 Slides open side to side. 3 Lite Sliding Window $12 Center window panel stationary, side panels slide open inward. Picture Window $5-6 Single panel, does not open Bay Window $12-15 Garden Window $20-25 Garden box , sometimes found over kitchen sinks. Bow Window $20-25 Casement Window $5-6 Cranks open, swinging outward 2 Lite Casement Window $8-10 Double (2 panel) casement window 3 Lite Casement Window $12-15 Triple (3 panel) casement window Full Round Window $4-5 Circular window Half Round Window $4-5 Octagon Window 1. DOOR STYLES: Sliding Patio Door $20-25 Slides open. 3 Wide Sliding Door $28-35 Sliding door with 3 panels Single Lite French Door $4-5 French door with a single pane of glass - swings open Double French Door (Single Lite) $8-10