The price of your window cleaning service can also vary depending on how dirty the windows are. For example, a window that needs just basic cleaning will be less expensive than windows with caked on dirt and grime.
http://www.improvenet.com/r/costs-and-prices/window-cleaning-service
1 Screen cleaning is .50 cents-$5 each, depending on size. Some companies will not clean broken or torn screens. 2  Sliding glass doors run $2.50-$8 per door. Some companies average the cost of sliding doors with small bathroom windows, to cut the price.  Some cleaners will include sills and tracks.
http://home.costhelper.com/window-cleaning.html
Contractors may price cleaning the outside of windows higher than cleaning the inside, since ladders or special tools are typically required. The average price for cleaning only the inside of a home’s windows is $121, compared to $158 for the outside and $160 for cleaning both inside and outside surfaces.
https://www.proreferral.com/hg/window-cleaning-cost/
Reaching the outside of windows on higher levels of your home requires the use of ladders or staging, adding time and difficulty to the job. Window cleaning prices average $132 for single-story homes, $156 for two-story houses, $176 for three levels, and $148 for a four-story home.
https://www.proreferral.com/hg/window-cleaning-cost/
While the size and location of your windows help your contractor calculate prices, the total number of them influences overall pricing. Homes with less than 10 windows cost an average of $125 to clean, while houses with 10-20 windows cost about $153, and those with 20-30 average $167.
https://www.proreferral.com/hg/window-cleaning-cost/
1 Generally, window cleaning costs $2-$7 per pane. For a 1,300-square foot home with 20 panes, the cost would run $40-$140. For a 2,200-square foot home with 28 panes, the price would average $56-$196.  Self-cleaning windows can be made easier with the proper tools.
http://home.costhelper.com/window-cleaning.html
1 Screen cleaning is .50 cents-$5 each, depending on size. Some companies will not clean broken or torn screens.  Sliding glass doors run $2.50-$8 per door. Some companies average the cost of sliding doors with small bathroom windows, to cut the price.
http://home.costhelper.com/window-cleaning.html
The national average rate for cleaning windows in a single-family home is $145. Apartment and commercial buildings often feature different architectural and window styles than homes, which means rates for cleaning them are $147 and $161, respectively.
https://www.proreferral.com/hg/window-cleaning-cost/
Average Costs of Window Cleaning Services. Usually, home owners spend between about $150 and $250 for a single window cleaning service. However, this can vary depending on the size, number, and type of windows being cleaned. Most window cleaning companies charge based on the number of windows and the type of windows at the home.
http://www.improvenet.com/r/costs-and-prices/window-cleaning-service
Some companies charge by the total square footage of the home. Generally, window cleaning costs $2-$7 per pane. For a 1,300-square foot home with 20 panes, the cost would run $40-$140. For a 2,200-square foot home with 28 panes, the price would average $56-$196.
http://home.costhelper.com/window-cleaning.html
how much does it cost for professional window cleaning?
The cost for professional window cleaning is $2 to $7 per pane. It costs $2 to $7 per pane for professional window cleaning.