Should I rely on just one appraisal tool?

No — cross-reference any single tool's estimate against real comparable sales data and, for high-value domains, consider a professional human appraisal before pricing a sale or making an offer.

Why do different appraisal tools give different numbers for the same domain?

Each tool weighs factors like length, keyword search volume, extension, and comparable sales differently, and pulls from different underlying sales datasets. Wide disagreement between tools usually signals a domain with unusual characteristics that automated scoring handles poorly.

Is an automated appraisal enough to set a sale price?

For lower-value, ordinary domains, it's a reasonable starting point. For anything you expect to sell in the thousands or more, treat the automated number as a floor for discussion, not a final price, and validate against real recent comparable sales.

Domain Appraisal

NameBio: How It Works, What It Costs & How Accurate It Is

NameBio is used to estimate what a domain name might be worth on the resale market. Here's how its method actually works, what it costs, and how much weight to put on the number it gives you.

Quick answer: NameBio uses historical database of actual reported domain sales (not an algorithmic score). It costs: Free search; premium membership unlocks advanced filtering and bulk data export.

How NameBio Works

Historical database of actual reported domain sales (not an algorithmic score).

What It Costs

Free search; premium membership unlocks advanced filtering and bulk data export.

What Makes NameBio Different

A searchable public record of real, reported secondary-market domain sales going back many years.

How Much Should You Trust the Number?

Arguably more useful than automated scoring tools for serious buyers/sellers, since it shows real transaction prices rather than an estimate

A Better Way to Use Any Appraisal Tool

Run the same domain through two or three different tools rather than relying on one. If the estimates cluster together, that's a reasonably useful signal. If they diverge wildly — which happens often — that's a sign the domain has characteristics (unusual length, ambiguous keyword value, niche appeal) that automated scoring genuinely struggles with, and a real comparable-sales search or a professional human appraisal is worth the extra effort.

No appraisal tool — automated or otherwise — replaces an actual buyer's willingness to pay. Treat any single tool's output as one data point, and cross-reference against real comparable sales before making a pricing decision on anything genuinely valuable. If you're evaluating a domain you're considering buying, also run a WHOIS lookup to check its registration history and confirm there's no complication (like a pending expiry or pre-existing trademark conflict) before you negotiate.

Frequently Asked Questions

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