Home Depot currently has several pretty good codes available for online use.  They appear to stack on top of already-discounted prices.  Here is a screenshot for your reference.

• $250 Off Orders $1500 with coupon code BATH250JN
• $150 Off Orders $1000 with coupon code BATH150AM
• $100 Off Order $750 with coupon code BATH100NN
• $50 Off Order $500 with coupon code BATH50R4

Originally posted earlier, it has been revised and this is just a friendly reminder.