Combine the deals at Amazon with a money-saving rebate from P&G and you've got the makings of a terrific deal. Amazon currently has 100 fl. oz. bottles of the popular Tide liquid laundry detergent for $9.87 each (price with PrimePantry box). Order 4 bottles, then use this mail-in rebate to get $10 back when $30 is spent on Tide, Downy, Bounce and Gain products. That brings the total price down to only $29.48 on all 4 bottles. Purchase by 09/30/2014 to get in on this deal.