Various merchants via eBay cut up to 74% off a selection of mattresses, bedding, and accessories during the July 4th Mattress and Bedding Sale. (The banner advertises up to 50% off but we found deeper discounts within.) Plus, all items receive free shipping. A couple of best bets: Home Collection Terry Cotton Waterproof Mattress Protector from $22.99 (pictured, at least a $4 low) DHP Nadine Metal Futon Frame w/ Wood Armrests for $109 ($6 low)