The cost can always vary because you have to consider factors such as global cost for wave generator construction, the cost to perform routine maintenance and repair on faulty or damaged generators and the ability to provide wave generated power at a low enough rate. The cost can well reach into the hundreds of billions of dollars.
Once the devices are created, maintaining and operating the machines is very inexpensive compared to other ways of generating energy, such as oil and nuclear.
Once the devices are created, maintaining and operating the machines is very inexpensive compared to other ways of generating energy, such as oil and nuclear.