When you buy a call option on a commodity, you don't need to worry about storing the physical commodity, which can be a significant cost savings. Here are some storage costs that you avoid when buying a call option:

1. *Warehouse fees*: You don't need to pay for a warehouse or storage facility to hold the physical commodity.

2. *Insurance costs*: You don't need to pay for insurance to protect the physical commodity from damage or loss.

3. *Handling and transportation costs*: You don't need to pay for the costs of transporting and handling the physical commodity.

4. *Maintenance costs*: You don't need to pay for maintenance and upkeep of the physical commodity.

5. *Security costs*: You don't need to pay for security measures to protect the physical commodity from theft or damage.

By avoiding these storage costs, buying a call option on a commodity can be a more cost-effective and efficient way to invest in commodities, without the burden of physical storage and maintenance.