Time to stock up on Purex Laundry Detergent at CVS starting 3/16 pay only 51-Cents for an Purex UltraPacks 18 ct! Purex Laundry Detergent 24-33 loads or UltraPacks 18 ct is on sale buy 1 get 2 free! Limit 6. Buy 6 for $6.29 each (est price from CVS.Com) or $37.74 total. $37.74 – $25.16 (4 Free Bottles)- $4.50 (after 3 printable coupons here) – $5 SavingsStar Offer (click here for Saving Star information) and final price = $3.08 for 6 bottles or 51-Cents per 18 pack of Purex UltraPacks!