If you use Purex Crystals, we have a nice deal on it at Kroger. Pick this up for $1.49 a bottle when you use the $1/1 Purex Liquid Detergent, Powder Detergent, or Crystals Scent Boosters coupon in the 9/24 RP!
Buy (1) Purex Crystals In-wash Fragrance Booster, 18 oz. $2.49 (wyb 4 participating items thru 12/12)
Use (1) $1/1 Purex Liquid Detergent, Powder Detergent, or Crystals Scent Boosters, 9/24 RP (exp. 12/31)
Final cost is as low as $1.49
There is a B2G1 Purex Cyrstals In-Wash Fragrance Booster printable that you can use as well.
Thanks, Kroger Krazy!