What this means in practice
The name may become unavailable or its quote may change before you complete checkout, so the final check happens again before payment.
Review both the first-year and renewal amounts when deciding whether to proceed.
Practical guidance
A domain search checks current availability and retrieves the first-year and annual renewal prices for the name you entered. These details can change between the search and checkout because another buyer may register the name or the registrar's quote may be updated. The final check before payment is therefore the one to use when deciding whether to continue.
Compare both the initial and renewal amounts before you purchase; the introductory period does not tell you the recurring cost by itself. If the name becomes unavailable or the price changes, review the refreshed checkout details rather than relying on an earlier result. Continue only when the name, extension, and quoted amounts are all correct. This avoids treating a search result as a guaranteed reservation or a permanent price.