The refurbished Microsoft Xbox 360 Core Game System costs $199.99 at iRepairSquad.com. With $9.99 for shipping, it's the lowest total price we've seen for this system since August when it hit $190. No longer in production, this version includes an Xbox 360 Console (with no hard drive or HDMI output), wired controller, composite AV cable, and free 30-day trial of Xbox Live Gold. It appears that a warranty is not provided by default, but a 1-year product replacement plan is available for $29. Worth noting is that iRepairSquad.com installs an additional cooling fan, applies thermal paste to the processor, and "re-works" the heatsink and soldering joints; this will most likely void any Microsoft-backed warranty.
Also of note, the refurbished Xbox 360 Premium Game Console is available for $239.99.