80124 has a lower percentage of people with a Bachelor's Degree than Lone Tree, but a higher percentage than Douglas County, which suggests that Lone Tree is a well educated area. Education statistics for 80124 only consider the 25 and older population.
You can find Somnapure both online and in several major reputable retailers.GNC, Walmart, CVS, and Walgreens all sell it, and the price ranges from as little as $11.88 (Walmart, online only) to as much as $69.99 (90 day supply on their official site).
Those prices though seem quite high. Although it depends on the quantity prescribed, it looks like this is available for the most commonly prescribed quantity at Walgreens with a GoodRx coupon for $275 (Nitrofurantoin Oral Suspension Pharmacy Prices and Coupons). Please note this price changes frequently, so this is a price as-of 11/28/12.