aj,
they haven't gotten back to us, but based on their front page calculator, instead of 3.375% it will be 4%. That's a saving of just under $50 a month. We are at 4.5% now.
When we first went to Amerisave we thought we would be doing HARP, but rates were quoted as 3.75 then. A quarter point higher puts us in "not worth it" territory.

Zillow has us at $306k, but our area is semi-rural custom homes. When the appraisal came back much higher we figured that our house didn't fall into the normal algorithm and the appraiser got it right. It's been disappointing to get the lower appraisal, and now rates are higher.