How much do aeration diffusers cost?

Prices vary depending on factors such as type, size, material, etc. Detailed quotes are typically required based on the customer's specific needs and order quantity.
For example:
DD215: Aeration disk with EPDM membrane in ABS with a diameter of 215 mm. Prices vary from 3.2$ /pcs to 5.4$ depending on the order quantity.
DD270: Prices vary from 3.9$ to 6.2$ depending on the order quantity.
DD330: Prices vary from 6.7$ to 12.1$ depending on the order quantity.
Also, the destination port can affect the price of the products.