$100 per foot +/-. You are going to have to get a permit from the state of Colorado, a well driller will not drill your well without a permit.

Windmill water pumpers are very expensive, tower, foundation.....

As others suggested, if you want a independent well/pump, look at the solar direct pumps. With this type of system (Windmill also) you should be pumping into a cistern, then pressure pump from there, a 2000 gallon tank would be nice. If you are on a sloped lot/land, you can bury the cistern above your home and let gravity do its thing to get pressurized water into your home. With a cistern there is no need for a high capacity pump, a gallon a minute or less pump would be sufficient. 6 hrs average sunlight a day, 300 gallons pumped a day. The direct solar pumps have been around for a long time, it's a very simple system.