Automated appraisals are tempting because they can turn an uncertain asset into one clean number. The problem is that a domain name does not trade like a public stock. There is no order book continuously telling you the clearing price.
Three different markets can exist
An investor looking for resale margin, an operating business buying a useful name and a strategic buyer with unusually strong fit can rationally assign very different values to the same domain. Collapsing those contexts into one number hides the decision you actually need to make.
A range makes assumptions visible
A wholesale range tells you something about liquidity and downside. A retail range describes a patient end-user scenario. A strategic ceiling acknowledges that exceptional fit can produce an outlier without pretending every buyer will pay it.
Confidence should describe evidence
Confidence is useful when it measures evidence coverage: relevant comps, registration history, keyword economics and market pressure. It becomes misleading when it is presented as a probability that the domain will sell.