I do not have access to real-time market data, but generally, Hebei Black (also known as Shanxi Black) is considered a high-end and expensive stone due to its high-quality and rarity. The price of the stone may vary depending on a number of factors such as its thickness, size, finish, and supplier. It is worth noting that price is not always the best measure of quality and other factors such as durability, strength, and aesthetic appeal should be considered when selecting any type of stone for a project.