Glass is generally more expensive than steel sand. This is primarily due to the higher demand for glass, which is used in a wide range of applications such as construction, automotive, and electronics. Glass production involves complex processes and requires specialized equipment, contributing to its higher cost. Steel sand, on the other hand, is primarily used in the steelmaking industry and has a more limited market demand, making it less expensive.

According to the U.S. Geological Survey, the average price of glass sand in 2020 was around $30 to $40 per ton, while steel sand prices ranged from $10 to $20 per ton. This price difference can be attributed to several factors. Firstly, the production of glass sand requires high-purity quartz, which is more difficult to source and process compared to the sand used in steelmaking. Glass sand also needs to meet stringent quality standards to ensure its suitability for various applications.

Additionally, the demand for glass has been steadily increasing over the years, driven by the growth of the construction and automotive industries. This sustained demand has pushed up the price of glass sand. In contrast, steel sand demand is more cyclical, largely influenced by the steel industry's production levels. When steel production is high, the demand for steel sand increases, but during downturns in the steel industry, demand for steel sand decreases, leading to lower prices.

Furthermore, the transportation costs for glass sand can be higher due to its weight and the need for specialized handling to prevent breakage. This adds to the overall cost of glass sand. Steel sand, being lighter and less fragile, can be transported more easily and at a lower cost.

In conclusion, glass is more expensive than steel sand due to its higher demand, the complexity of its production process, and the stringent quality standards required. The price differences are also influenced by market dynamics and transportation costs.