CVS Coupon Matchups – Great Deals on Purex Laundry Detergent and Crystals The links in the post below may be affiliate links. Read the full disclosure Here. January 30, 2017 by SMFM Leave a Comment Head to CVS this week ans grab a HOT deal on Purex Laundry Detergent. You can stock up on this, no coupons needed! Purex 43.5-50 oz. or Crystals 18 oz. $1.99 (regularly $5.99) Final cost $1.99 (no coupons required)!