The book is made available to schools free of charge.

Seven days a week, we saw patients free of charge.

The show is put on free of charge for the community.

The games have since been made available free of charge on Tubular.net.

She gave her services free of charge, to support the company.

These programs are open to all students free of charge.

The programs are free of charge and open to the public.

Some companies will even provide you with a car to drive, free of charge.

All calls to the number are made free of charge.

The talk is open to the public free of charge.