I am renting for just 5 days, September 27-October 2nd and since the beginning of July the price (for an intermediate) has gone from a high of $223 down to $170 (about 2 weeks ago). I got it down to $170 using the old Disney Club codes from my Spring 2002 newsletter.
HOWEVER, at the end of last week National emailed my husband (the Emerald Club card holder) with a special coupon code that brought the 5 day rental down to $151 with all fees included. Make sure you read those emails from National!