It's the appraiser's obligation to comment on the reasonableness of the sale price in every contract analysis, whether the price differs from value or not, or at least it's been explained to me that way by folks who had to the power to bounce me out of my career by virtue of their authority to regulate.
Really ? Once again, this is your opinion. Nobody, including you, found any reference or advisory opinion saying it is the appraiser's obligation to comment on reasonablness of the SC price.
Lenders are concerned with several things: is the sale arm's length; are its terms and conditions (the most important of which are price) reasonable. Does the contract make sense according to the definition of value used to underwrite the collateral?
The last part, does the contract make sense according to the def of value, appears to be questionable. Before that the list was realistic. Whether or not a SC makes sense is up to a RE atty, not an appraiser.
Every so often on AF, a thread (like this one) raises the issue: the lender asked me to explain why the value is different from the contract price. And then the whining starts: scope creep; how dare they attempt to influence us; why don't they read the report; et cetera, etc.
The lender is merely asking for a more detailed analysis of the sale agreement. If your value is higher or lower (let's assume by a lot) than the contract what other basis do you have for analyzing the contract, to comment on its reasonableness? If your MV are good enough to underwrite the loan, don't you think they're good enough to draw conclusions about the sale contract?
Why is the lender not asking for a more detailed analysis of the sale agreement when the MVO matches it exactly? It doesn't occur to them to ask how a buyer and seller manage to arrive at the exact same number weeks prior?
Everyone in this business already knows that reports with values much different than contract prices get much closer scrutiny. Somehow so many are blindsided by the client's request to give this more explanation and narrative. Criminy! Some of you must leave a trail of bread crumbs when you leave in the morning just to be able to find your way home.