Playtex sippy cups are on sale for $3.99 at Walgreens. Stack a coupon from the Walgreens May Savings Book and a printable coupon to get a free sippy cup! The printable coupon will vary from person to person. Click on the coupon link below. If you get the $2.00 coupon, then your cup will be free. But some people may get a $1.50 coupon, which would make the cup $0.49. Either way, score a $6.00 cup for less than $1.00!