Wow I'm surprised you even found that low (wait nvm...I've only been checking United because I have FF miles with them). The prices just racketed up these last few days it's been pretty insane. You can find better deals closer to dates sometimes, but that always has a risk too. I try to buy ahead of time as normally I do get good deals with a lot of time left in advance but right now with the economy as it is.... either way is a gamble?