Amazon offers the Barska Biometric Safe, model no. AX11224, for $152.51 with free shipping. That's the lowest total price we could find by $17. It measures 16.5" x 7.75" x 14.5" and features a fingerprint pad (which stores up to 30 fingerprints), two emergency backup keys, and mounting hardware.
Orders placed via Prime by December 22 are expected to arrive in time for Christmas.