Generally, "ALL" automated appraisal tools are flawed, even AI Assistants (E.g. CoPilot, Grok, Gemini, etc.) are pulling data from unreliable sources at times that render an inaccurate result.
For instance, automated tools usually don't have a calculation for current trends, market shifts, etc. since each is in a different niche with completely different product/service sliding scale price points and other variables at play.
Another example, is when previous sales history is leveraged that was hyped and not a genuine real world use case. This is sometimes obvious when a domain is reported to have sold for xxxx and remains on a domainer related parked page for 10 years after the sale.
Or when you see a sales report for xxxx and then 3 years later it sells again for xxx and still parked a year after that. Again a red flag.
Manual appraisals, where the appraiser takes the time to actually dive into the niche, see what's trending, product/service pricing, business model, etc... are going to be the closest to accurate as you'll get and even then, it's not going to be 100% and just speculation.
On NamePros there are two manual appraisal options:
Remember, at the end of the day, a domain name is truly only worth what a buyer and seller agree on.
What works for one may not work for another.
Enjoy the domain adventure!