Rich, I would agree with Susan's advice to get someone to represent you who is very familiar with the area - I was showing homes in Monument last summer in the price range you are exploring and there was a wide range of value for the relatively small price range the Buyer and I were looking in - obviously some were very overpriced and some were more reasonably priced - an agent very familiar with the homes in the area and able to pull homes that have recently sold for you will give you much better guidance. The price on the home you are considering may be reasonable or unreasonable - recent comps will help you make a better informed offer.
I noticed your zip code is from out of state - if you are going to be making a purchase from long distance, I think it makes even more sense to have a local agent who can check on the progress, take photos periodically for you, etc. Finally, is the home completed already? Is it a "dirt" start (you pick out the lot and then the construction begins)? The price the builder may be willing to accept will probably vary depending on the answer to thiese questions. My experience is that new homes are a great way to go because you can select options/features/upgrades/etc but a home built from a dirt start is also the most expensive way to buy a home .... so, you should plan on staying in the home for a longer period of time.
Monument is a little further south than I normally work but I do know some good agents who would be glad to help you - let me know if that would be helpful.