How do I know if people will buy my product?

How do I know if people will buy my product is mainly about measuring real customer commitment rather than stated interest. A reliable approach is to present a clear offer to the right audience with realistic pricing, details, trust signals, and a genuine call to action. For example, a preorder, deposit, paid pilot, or completed order provides stronger evidence than clicks or email signups. The main caution is that low conversion can result from weak demand, poor targeting, unclear value, missing trust, pricing, or purchase friction. The final output should provide a measured path from exposure to commitment, supported by interviews with both buyers and non-buyers.