Or you could try to do the "we'll beat and meet" price.
If you find the same exact item at another store, they'll match the price and then take off an additional 10%. Generally the only "sale" items are on store brand items. Like home depot always advertises Ryobi because it's thier brand.
HD and Lowe's CC both offer 299$ or more purchase and get 6 months of no interest/no payments... and occasionally 12 months. If it's worth it to you, get the card, get the discount, and then you have 12 months to pay it off. And occasionally you'll get offers for 10% off and such.
don't forget to look into the tax rebate for energy star appliances. Every little bit helps, even if it doesn't come till next tax season.