NIP definition by Slang.net
This page explains what the acronym "NIP" means. The definition, example, and related terms listed above have been written and compiled by the Slang.net team.
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In online sales listings, NIP stands for "new in package." This acronym means the listed item has never been opened or used.
You're most likely to see this acronym in collectibles listings on eBay, Craigslist, and Facebook Marketplace. Collectibles' condition affects their value, so a NIP version of an item will command a much better price than a used or damaged version.