: Amazon and eBay are reliable for small packs of cards, key fobs, or adhesive tags for home use.
: Standard PVC cards for access control (125kHz or 13.56MHz) typically cost between $0.05 and $0.20 per unit in wholesale quantities. buy rfid chip
RFID chips are widely available for purchase, ranging from bulk industrial tags to specialized bio-compatible microchips for animal tracking. Because "RFID chip" covers a broad range of technologies, your buying options depend heavily on whether you need them for inventory, access control, animal identification, or hobbyist electronics. Bulk and Industrial RFID Chips : Amazon and eBay are reliable for small
: Hobbyist sites like Adafruit or SparkFun (often found via Google Search) are better for individual chips or development kits for Arduino/Raspberry Pi projects. buy rfid chip