I was looking at the All-Clad 10 piece set. This item is already 20% off of $899.99 until the end of the year at $699.99. You can then apply use the coupon code FRIEND and get another 30% off. Total cost not including tax was $489.99 plus free-shipping. You also get another pan and some oven mitts as a gift with purchase using the coupon code. Another $180 value. Bought this.
I also tried this coupon on other All-Clad sets and it worked. So if you went for super-expensive $2499.99 set, you get 20% off for their sale $1999.99 and another 30% off ($600!) with the coupon code.