Risk: Moderate

The AI Rental Property ROI Calculator business opportunity poses a moderate risk for beginners starting from scratch, especially if they can't afford to lose money. While the potential losses primarily involve money invested in setting up the business, there is also a risk of losing time and energy if the venture doesn't yield profits. Some beginners have spent money on similar ventures without receiving any returns, highlighting the possibility of startup costs not paying off. Online discussions mention instances of failing or losing money in this field. I'd rate the risk a 2 out of 3 because there is a chance of incurring financial losses through setup costs and potentially not recouping the investment.