Home Depot has a set of coupon codes.  In addition, they stack on top of already-discounted prices.  These are supposedly for bath related products but at the time of this post, they appear to work on other items too, including those on clearance.  Here is a screenshot as an example for your reference.

• $350 Off Order Over $3000 with coupon code BATH350B8
• $275 Off Order Over $2400 with coupon code BATH275P7
• $200 Off Order Over $1700 with coupon code BATH200M1
• $130 Off Order Over $1200 with coupon code BATH130J3
• $70 Off Order Over $700 with coupon code BATH70H5