This in-depth guide explores whether large format porcelain slabs are worth the cost per square foot, covering everything from pricing and installation to aesthetics, maintenance, and value. With material costs ranging from $5 to $50+ per square foot and installed costs from $55 to $125+, porcelain slabs offer seamless luxury, durability, and design versatility that often justify their higher price tag—especially for high-impact, low-maintenance spaces.