Texasfan,
I understand the confusion and it throws many people off.
Here is how to look at it:
Put aside the "real" terms of sale of subject (concessions, etc). Though you would note any concessions in the contract section for the subject if it is a purchase, after that, you put aside the subject contract/price/concessions, etc.
The reason you do that is, for development of MV purposes, the subject is looked at as a "presumed sale", according to the terms of market value (the definition of MV is in the preprinted certification of the FIREEA form). In other words, for report valuation development, the terms of sale for the subject are the presumed market value terms per the definition, and that means no concessions, no undue influence, no favorable financing etc., even if they are present in the "real" subject contract.
The subject, for valuation purposes on the SCA, takes on the presumed MV sale terms.
Read the purpose of the apprasial, top of the 1004 form, then immediatly read the definition of MV on the preprinted certification page. Below the def of MV on the certification, the next paragrahp even gives an example, re, not to adjust financing dollar for dollar on the comps when compared to the subject. Reading it all at once like that makes it very clear.
Then, we adjust (if indicated), any "real world" sales terms of the comps, such as concessions, that differ from the MV definition of presumed MV sale terms, in the order they appear on the sales grid.