Cary does not sell as one market. The comparable set that governs a house is drawn from its submarket, and pricing against the wrong one is the most expensive error available to a seller. These studies take each part of town on its own terms — what got built there and when, which buyers it draws, what the housing stock does well, and what you give up to live there. They are written to be read before a search narrows, not after an offer is out. Each one is updated as the stock and the pricing move.
A study is not a recommendation. The point is to make the trade-offs legible before you are standing in a house on a Saturday deciding under time pressure — lot size against commute, new construction against an established street, an amenity you will use against one you will only pay for. Where a submarket is thin on recent sales, that is stated rather than smoothed over. New studies are added as there is enough transaction history to say something useful, and existing ones are revised rather than replaced so you can see what changed.
Wider context for all of them sits in the Cary buyer's guide. For the towns next door, see Morrisville and the Triangle overview.