Dave Electronics via Amazon offers Prime members 20 HP Custom Holiday Photo Cards for $5 with free shipping. (Non-members can spend over $35 to get free shipping; otherwise, shipping adds $5.58.) That's a savings of $5 and the lowest total price we could find. These glossy cards measure 5" x 7" and include 20 matching envelopes.

Orders placed by December 21 at 12 am ET are guaranteed to arrive by Christmas.