Just a slight correction..

I think you get the cheapest price of the item listed at AFTER you've placed the order. So if the item has been offered at a lower price in the PAST before you've placed the order and the price has been raised since, then you're not eligible for any of the lower prices before your order.

So if the $582 was last week's price and it's been raised to $588 and you've just placed your order today (and the price raises from here til release), you won't get the $582 price.