Understand the presentation offered in clearance
Clearance can describe outgoing packaging, a reduced assortment or a temporary commercial operation. Ask what actually distinguishes the offer: box, size, version or product condition. A precise description supports a meaningful comparison, while a vague reference to surplus stock does not provide enough information about the bottle being sold.
Consider storage and the available product history
If age or storage conditions matter to your decision, request the available information before payment. Do not infer a certain production date from an unofficial batch-code reader. Keep the invoice and correspondence; the retailer should be able to address your questions about the particular product it is offering.