A bulk price change is quick to make and slow to discover when it goes wrong. Guardrails shows you the exact before and after for every variant before anything is written to your store, so you approve the real result rather than a percentage. Set a price floor or a maximum discount and any variant that would breach it is skipped, with the reason shown. Every run is recorded and can be undone. If a price changed after the run, the undo leaves that one alone instead of overwriting it.

• Preview the exact new value for every variant before anything is saved.
• Set a price floor or maximum discount, and unsafe changes are skipped.
• Undo any run, and anything changed since is left alone, not overwritten.
• Every change is recorded with its before and after value, and exports as CSV.