Automating the process of Willingness-to-pay calculation

I am looking for a freelancer to automate the process of Willingness-to-pay calculation. The current method being used is through manual surveys, but I am looking for a more efficient and accurate way to simulate a numerical process. The ideal candidate should have experience in data analysis and be proficient in Python or R. The level of accuracy required for the automated calculation is moderate, within 5%. If you have experience in this field and can provide a solution that meets these requirements, please submit your proposal.