Select third-party sellers via eBay take an extra 20% off orders of $25 or more in the categories of cell phones, computers, television, men's fashion, women's fashion, and luggage via coupon code "PSUMMER20" when you check out with PayPal. (A maximum discount of $50 applies.) Plus, most orders bag free shipping. Some exclusions may apply. Deal ends June 20.
Note: This coupon can be used once per PayPal account within a single transaction. Also, warranty information for open-box or refurbished items, where available, is on individual product pages.
If you aren't using any of these three methods for significantly saving on laundry detergent, you are washing money down the drain.