Expansys offers the Google Nexus 10 16GB 10" Android Tablet
in Black, model no. GT-P8110HAAXAR, for $369.99
for shipping. That's the lowest total price we could find by $32, although we saw it for $64 less in October. Features include a 10.1" 2560x1600 touchscreen display, Exynos 5 1.7GHz dual-core processor, 2GB RAM, 16GB memory, Bluetooth, 5-megapixel camera, 1.9-megapixel front-facing camera, 802.11n wireless, and Google Android 4.2 OS (Jelly Bean).
Note This may or may not arrive in time for Christmas; no official shipping deadline has been posted.