Thanks for sharing the information. Looks like each Indian Embassy has its own rules for fees.
In our case, NY embassy just charged $23 with two executants (me and my wife). You can see the receipt in above article.
As a matter of fact, I had asked this question when i was making the payment in Emabssy. They had replied saying the fees ($23) is charged per DOCUMENT (Cashier told me it is NOT based on number of signatures/executants or number of papers).
But, it is good to know that DC embassy has different criteria.
Yes, I called Washington DC embassy and re-confirmed it that DC embassy charges 20$ + 3$ per Signature.
So 46$ for me and wife.
They also retorted advising not to compare with NY embassy
I am from NC and so my attestation has to be done at DC embassy is what I was told.
Regardless, your post has been much helpful and sure would share with my friends in need.