The quality of the tempered glass is another critical factor that affects its pricetempered glass price per square foot. High-quality glass is made from high-purity raw materials and undergoes a rigorous manufacturing process, which ensures its strength, clarity, and durability. On the other hand, lower-quality glass may be made from cheaper raw materials and may not undergo the same level of processing, resulting in reduced strength and clarity. As a result, high-quality glass is generally more expensive than lower-quality glass.