Dear Sir/Madam,
I'm happy to help you on this task. I am an expert in advanced excel features and have a strong financial background. Further, I have already developed such dynamic cost estimation sheets for various clients/businesses. You can visit my profile to see my qualifications, experience and reliability, and if you are comfortable with those, I am ready to discuss the project.
I assure you that I will go beyond your expectations.
I look forward to hearing from you.
Best regards,
Priyal