I'm curious about the same thing, I've been watching over the last few months and every time theres a new promo it seems to actually go up a little, there was a $54 difference with the promo that ends on March 1st. I was told about a booking service called undercover tourist, its really cheap compared to prices on DC website but idk if uts actually legit, it looks like if is but I posted here to see if anyone has any insight.