The mixing of paint and primer together, in the same can, has swept through the coatings industry like no other innovation. Almost every manufacturer and retailer has added a version of this product to its assortment, although some have done so reluctantly. Within the paint industry, many dismiss paint-and-primer combos as a marketing ploy that raises the price of a gallon of paint. Others say it can save time and money and has a rightful place as a consumer option.