SavingStar Weekly Healthy Offer: Save 20% on Sweet Potatoes! April 1, 2014 by Rebekah The links in the post below may be affiliate links. Read the full disclosure.Print Email It’s time for the SavingStar weekly healthy offer! This week we can save 20% on any single purchase of loose sweet potatoes. I’m all about additional savings on produce. This particular offer can only be used once, and it does expire on April 7th.