Walgreens has Crest Toothpaste and Oral-B Manual toothbrushes on sale for $3.00 each this week.
Use the $1.00/1 Crest Toothpaste 3 oz.+ digital coupon and the $1.00/1 Oral-B Manual digital coupons.
You get $4 in Walgreens Cash when you buy two select beauty or personal care products, to make it free.