1. Use the actual extension mix
An advertised rate for one extension says little about a mixed portfolio. Build a list of domains, renewal dates, actual recurring prices, and premium names. A total weighted by your holdings is more useful than a simple average of headline rates.
2. Separate initial and recurring prices
Registration and transfer offers can reduce one transaction without improving future renewals. Compare the expected holding period. If you intend to keep names for years, include those renewal years so a short promotion does not dominate the decision.
3. Show currency and fees
Record the billing currency and whether quotes include taxes or other charges. Where currencies differ, identify the conversion assumption and relevant payment costs. A converted estimate should not be represented as a guaranteed future bill.
4. Check the operational features
Access controls, account tools, support, privacy options, and DNS hosting may affect the result. Confirm what you actually need and whether it is included. A lower unit price can introduce manual work or remove a service your domains depend on.
5. Model selective changes
You do not necessarily need to move everything. Compare pricing changes at the existing registrar, selected transfers, and consolidation where it has a clear benefit. Review transfer eligibility and live DNS dependencies before treating a projected saving as achievable.
6. Build a useful decision table
Show one-time cost, expected recurring cost, relevant features, migration work, and assumptions for each option. Record quote dates and the expiry of promotional or negotiated terms. The table should explain the decision rather than simply highlight the lowest advertised number.
A useful starting point
Compare the same portfolio over the same holding period, with recurring prices and assumptions visible.