Tenant Approval of Pricing Agreement Letter. Tenant shall promptly review the Pricing Agreement Letter and shall approve, execute and return same to Landlord within seven (7) calendar days after delivery thereof to Tenant. If the Tenant fails to execute and deliver the Pricing Agreement Letter within said seven (7) calendar-day period, then each day of delay in delivery shall constitute one day of Tenant Delay. The Pricing Agreement Letter shall require that Tenant pay fifty percent (50%) of all Tenant Improvement costs in excess of the Tenant Improvement Allowance presented in the Pricing Agreement Letter upon execution of the Pricing Agreement Letter. Landlord reserves the right to bill Tenant up to ninety-five percent (95%) of the Tenant Improvement costs in excess of the Tenant Improvement Allowance during the construction period in proportion to the amount of work completed or materials purchased, with the final five percent (5%) due upon acceptance of the completed Premises and in any event no later than one (1) day before occupancy by Tenant.