I'm planning a quick trip south for five days over Christmas; hoping to get to Torres del Paine for some trekking (and relaxing). Also, perhaps a day-long sailing trip up some fjords from Puerto Natales. Charging my digital camera battery now.
Round-trip airfare is $200 to Punta Arenas. 4x4 rental is reasonable. Hotels are cheap--good thing, as we're too lazy to camp on this trip. Life is hard.