The price is kinda high for what you're getting. We got a 80x30 concrete pad on 45x110 foot lot, full hookups, underground irrigation, all landscaping and a 12x24, roughed in and finished on the outisde coach house for 62K. The difference is it's in south Texas and is a 55+ community. There is also a beautiful club, fitness center, laundry, pool, hot tub...you name it included.
On another note, don't forget to add property tax, utilities, etc. to your monthly maintenance dues when figuring your monthly living expenses...