Fixed Fee and Not-To-Exceed Terms. Except where a fixed fee or a not-to-exceed amount is mutually agreed in writing, any fee quotes are non-binding estimates. If SWCA agrees to a fixed fee or a not-to-exceed amount based on inaccurate or incomplete information provided by Client or other circumstances that are not SWCA's fault and, as a result, the assumptions relied upon by SWCA for the originally agreed upon fee limit are materially affected, the Parties shall negotiate in good faith to determine appropriate modifications in pricing and related terms.