Such jobs are my daily practice. My bid also includes the macro doing the job for the case you need it for further use. I plan to complete the project via writing an Excel macro contained in a separate XLSM file.
This approach makes further use of the macro very convenient by offering a Control sheet to identify the current input and output files, active controls if necessary, etc. Further use of macros, fixing of bugs and minor changes are included in the bid without any additional fees.
Regards!