Amazon offers the Sony PlayStation Vita 16GB Memory Card for $19.99. (GameStop has it for the same price via in-store pickup, as we mentioned three days ago.) Plus, Prime members receive free shipping. (Non-members can spend $35 or more to qualify for free shipping; otherwise, shipping costs $4.98.) That's $10 under our mention from last January and the lowest total price we've seen. (It's also a current low by $13.)

Orders placed by December 22 are guaranteed to arrive in time for Christmas via Prime shipping; otherwise, choose Standard shipping and place your order by December 18 for guaranteed delivery.