Build or Buy Existing Home?

[Rose C]

We just received a quote from a packaged home builder in North Carolina. The site is in North Hilo. The sq ft price for a 1550 sq ft is about $210/sq ft, not including driveway, power to site, water hookup, septic, permits. About 2/3 of the cost are for design and materials and 1/3 for local labor. Although it's a nice design that takes advantage of the view, the cost seems a bit excessive to me. Any comments? We don't want to buy an existing house since we already have the land.

Rose C