Another house whine!

We got the analysis of our house value from the realtor yesterday, and it was just what I expected. His estimate of its selling price was about $30K higher than the realtor who works with the expensive builder. However, that increased number is scant comfort compared to how much it would cost to build a new house. We're no closer to a decision (and I've still got a stomach ache - this whole thing is going to give me ulcers).