Most password manager regrets come from the second year, not the first. Before you buy, answer two questions. What will the plan cost when it renews, not just in the introductory period? And how will you get your data out if you leave? The checkout worksheet walks you through both, and it works for any vendor.
If you are buying, read the pricing and renewal explainer first, then the discount page. The discount page lists only offers the vendor publishes on its own site and says when no code is needed. Keep the cancellation and refund guide open so you know the money-back window before you pay.
If you are switching, start with the guide for wherever your passwords are now: browser storage, an app that is leaving, LastPass or 1Password. Each migration guide follows the vendors' documented export and import steps. Read it before you delete anything, and keep your old export file private until the move is confirmed.