I do not have access to the latest market prices, but Hainan Bluestone (sometimes known as Hainan Blue Stone) is generally considered a high-quality and durable stone suitable for various uses, from outdoor paving to indoor tiling and countertop surfaces. Whether it is expensive or not depends on various factors, such as the specific type and grade of the stone, the supplier, the quantity and location of the purchase, and other market and economic conditions. It is best to consult with a stone expert or supplier to get a current and accurate price estimate.