I keep an eye on HL and it is rare to see the CB and nesties on sale and when they are they have been 30% off. The best deal is to use the printable coupon from their website when they offer 40% off. They usually have the 40% coupons a couple times a month. That doesn't sound often, but when they do offer those coupons they are good for the entire month so you just print out as many as you need and go back each day.
They had the 40% coupon last week, but not this week. Check back next week. Also you can sign up for their newsletter and receive an email on Sundays with their coupon so you don't have to check their website each week. HTH!