eBay : Often has original Google-branded units or multi-packs (e.g., ~$45 for a 2-pack).
While you cannot buy it from Google, several "Works with Google Cardboard" certified partners and retailers still offer the viewers: google cardboard official buy
Google stopped selling viewers directly on the Google Store in March 2021 . Because the design is open-source, you can still purchase official-spec viewers from third-party manufacturers or find remaining stock on secondary marketplaces. 🛒 Where to Buy eBay : Often has original Google-branded units or