One USB-C port not functioning on 13inch MB Air Intel 2018 model

One of the USB-C ports is not functioning on my 13 inch MB Air Intel 2018 model. I tried resetting the SMC as instructed on another post, no success. The port does not work for charging or for connecting an external disc. I therefore have only a single working USB-C port ... and no other means of charging!

My MB Air is no longer in AppleCare support.

If it's hardware, is this an inexpensive repair?

Or any other suggestions?

Thanks.