Blinq offers the open-box Creative Sound Blaster Zx 5.1-Channel PCI Express Sound Card, model no. 70SB150600000, for $71.39. Coupon code "Welcomeback" cuts it to $64.25. With free shipping, that's $45 under the lowest total price we could find for new unit in its original packaging. This card features 3D surround sound, beamforming microphone, and TOSLINK optical audio input and output.
Orders placed by December 18 at 4 pm ET are guaranteed to arrive by Christmas. A 90-day warranty applies, although it's unclear who backs it.