Prices are in US Dollars (US$). YUBIKEY 5 NFC $81.00 YubiKey 5 Nano $97.00 YubiKey 5C $93.00 Security Key NFC by Yubico $45.00 YUBIKEY 5Ci $122.00 YubiKey 5C nano $106.00 YubiKey 5C NFC $93.00 Security Key C NFC by Yubico $51.00 YubiKey Bio – FIDO Edition $140.00 YubiKey C Bio – FIDO Edition $153.00