Using real but undisclosed domain sales, we tested how closely automated appraisal tools match market reality.
This is the first in a series of stories about automated domain appraisal systems.
Automated domain name appraisal services have been available for years and remain controversial. They appeal to sellers who want affirmation that their domains are valuable, but flattering estimates alone don’t help sell names. Overpricing a domain can drive buyers away and reduce your chances of a successful sale.
With help from Mike Cyger, we evaluated fifteen automated appraisal tools. The rise of new AI platforms has lowered barriers to building appraisal systems, so the number of such tools has grown rapidly in recent years.
Our conclusion: no automated appraisal service is perfect. Some perform reasonably well on particular types of domains, while others miss the mark. Appraisals can be inconsistent across different domain types and across repeated queries.
Testing appraisals is difficult. We used a set of domain names that were recently sold but whose sale prices were not publicly disclosed, so the appraisal services couldn’t simply look up the sales price. These were routine market transactions, not outliers, and we believe their sale prices reflect market reality. We also tested some domains currently listed with buy-now prices.
We didn’t expect exact precision. The key requirement is that appraisals get the order of magnitude roughly right. A domain worth about $5,000 should not be appraised at $0 or at $50,000-plus, even if nailing the exact price is challenging.
To illustrate the complexity, consider two two-word brandable domains we tested. MakeMatter.com sold for $15,000, and PressBridge.com sold for $5,000. Which is better is debatable. Wholesale transaction history gives some perspective: MakeMatter.com changed hands for $847 in a GoDaddy auction in 2022, while PressBridge.com was purchased for $59 as an uncontested backorder in 2016. The keyword “press” also has intrinsic value, which may have influenced price.
Seller behavior matters a great deal. If MakeMatter.com had been listed at $5,000 it likely would have sold for that amount; if PressBridge.com had been listed higher, it might have fetched more. Because listings, pricing strategy, timing, and marketing affect outcomes, appraisal tools cannot be expected to exactly predict final sale prices. Proper testing at scale would require thousands of unreported sales, data that only a few organizations possess.
That said, some appraisals are clearly wrong. For example, if a tool suggests a domain’s retail value is lower than a price it recently sold for in a competitive auction, that appraisal is likely inaccurate. In one case, two appraisal services valued MakeMatter.com below the $847 wholesale price it previously received. Conversely, valuing an unregistered domain in the five-figure range without clear evidence is usually unrealistic.
Inconsistency is another problem. Some AI-based systems return different values for the same domain on repeated queries, indicating unstable parameters or poor calibration. That undermines trust in the output.
Here are a few practical takeaways from our review:
- Specificity should be treated skeptically. Forecasts that report very precise values (for example, $158,328) imply a level of accuracy that domain appraisals cannot support. Rounded values or ranges are more honest and useful.
- Know the limits. Some systems sensibly restrict themselves to .com names because there’s more reliable data for those extensions. Appraising non-.com domains is harder and often less reliable.
- Appraisals can still be useful as a relative filter. For example, when ranking expired domains on ExpiredDomains.net using a service’s scores, the best candidates tend to appear at the top and the weakest at the bottom. You may disagree with individual numbers, but the ranking can be a helpful first pass.
- Transparency matters. The most credible appraisal tools explain their reasoning and show comparable sales. Comps are the strongest datapoint in valuing domains—similar to how real estate is appraised. Without comps or a clear rationale, appraisals are difficult to defend.
In the coming days, Domain Name Wire will publish detailed analyses of 11 domain appraisal tools. We’ll follow that with a summary identifying the tools we consider most useful and a shortlist of four platforms we excluded from review because of critical flaws.
Note: we considered sharing our results with each appraisal platform beforehand to allow them to contextualize certain outcomes. Ultimately we chose to publish the findings first and invite comments afterward. We welcome feedback from appraisal tool creators and users.