Amazon has the 15oz Happy Belly Tomato Sauce for $0.80 with free shipping on $25+ or with Prime (extra 5% off for 5+ S&S orders). Excellent filler item to reach 5+ items for the 15% S&S discount. Comparatively, Walmart's in-store brand is 88 cents. 

• Also qualifies for the 20% off $50 promo for Prime members.