The manufacturing costs of diamond saw blades vary depending on the size, type, and quality of the blade. Generally, the cost of a diamond saw blade can range from $20 to $200. The cost of a diamond saw blade is largely determined by the quality of the diamond used in the blade. Higher quality diamonds are more expensive, and therefore, the cost of the blade increases. Additionally, the size of the blade also affects the cost. Larger blades are more expensive than smaller blades. Lastly, the type of blade also affects the cost. For example, a continuous rim blade is more expensive than a segmented rim blade. In conclusion, the manufacturing costs of diamond saw blades can range from $20 to $200 depending on the size, type, and quality of the blade.