NEC ECC. Agreed Direct Fee, is it audit-able under an option E contract?

As an option E contract requires costs to be “open book” are the the Direct fee and Subcontracted fee able to be audited?

Short answer - no.

Longer answer - no it isn’t.

Or even longer answer - they can look at it but cant do anything about it if they with hindsight think it was too high…

If they found it was too low, would they agree to increase it??