Answer: Economic factor
Explanation:
The economic factor is one of the factor that influence the purchasing decisions as it directly affected the investment value in the business. The economic factor basically include the tax rates, wages, policies and the interest rate in the business.
As, the customers always preparing a budget list so that is why it directly affect the purchasing decisions. The given scenario best explained about the economic factor that influenced the Paul's purchasing decision.
Therefore, Economical factor is the correct answer.