Walmart offers the Corelle Livingware 16-Piece Set in Memphis for $18. (Amazon charges the same with free shipping for Prime members.) Opt for Site-to-Store pickup to dodge the $4.97 shipping charge. That's tied with our mention from three days ago and the lowest total price we could find in any color by $6. This service for four set includes 10-1/4" dinner plates, 6-3/4" salad plates, 18-oz. soup/cereal bowls, and 11-oz. mugs.
Amazon offers its Prime members the Corelle Livingware Corelle 5-Bowl Fun Pack in Winter Frost White for $17 with free shipping. (Non-members can get free shipping with orders of $35 or more; otherwise, shipping adds $9.49.) That's the lowest total price we could find by $12. It comes with four individual bowls and one serving bowl.
Update: Note that this item is temporarily out of stock, but can still be ordered at this price for delivery when available.