It is important to note that the dues of $147/month cover grounds and common area maintenance, exterior building maintenance, street lights, private street maintenance, and management of the Homeowners Association.
Also, look at recent sales in Ardmore at Reedy Creek:
Bear in mind that Lennar Homebuilders will be building out the rest of the community at some point, and Lennar has yet to announce their plans for completion, style of homes, price point, etc.
I used to live a quarter mile from Ardmore, and miss living on that side of Cary. It was so convenient to run into Raleigh for dinner, etc.