55-Count Tool Box Brand Professional White Painter's Rags (9.4" x 11" Sheets) $1 + Free Shipping

Home Depot has the 9.4 in. W x 11 in. L Disposable Paper Professional Natural Fiber White Painter's Rag (55 Sheets Per Roll) on sale for $0.98 a roll with free pickup or delivery in some stores. These appear and feel very similar to the blue shop paper towels, good price to stock up.