Best Choice Products via eBay offers this Beginners Acoustic Guitar Starter Kit in Black for $34.95 with free shipping. That's $40 off list and the lowest total price we could find, although it was $5 less in September. This set includes a 38" acoustic guitar, case, strap, tuner, extra strings, and pick.
Note: It's not guaranteed for delivery by Christmas.
Update: As a reader found, HomeGeneral via eBay offers it in Wood for $28.99 with free shipping.