Hi,
jtml either knows of the real deal - or he had some trouble calculating the average price.
I am afraid, you won't get the LX3 for 400 bucks - not from a reputable dealer anyways, which in the end usually pays off!
If you take a look at Amazon than the average prize this morning was 473 bucks. And that doesn't take into account Adorama and B&H, who sell the LX3 for 499,-.
So the real steal right now is everything around 450,-, which even might be an introduction price that will go up again towards Christmas. If you take a look at the price development of the LX2 than you will notice, that it never went far below it's initial price.
Happy hunting!