Sorry this is a little late, but this is the cheapest I've ever seen this series go for. Makes for a great Christmas gift!
http://www.bestbuy.com/site/olspage.jsp?skuId=7443769&st=sex+and+the+city&type=product&id=1482422
http://www.bestbuy.com/site/olspage.jsp?skuId=7443769&st=sex+and+the+city&type=product&id=1482422