I'm very interested in completing this job for you. From the description you have given, it would be fairly simple to accomplish this goal for.
What makes me stand out from the other bidders? I have 5 years experience developing Excel workbooks and forms for several organizations, including the United States Air Force. I'm proficient in Excel formulas and VBA, and can provide you with your finished product in an expedient fashion.
I know you have a lot of bidders to consider, and I hope you consider allowing me to complete this project for you. Good luck with your decision!