From AP https://www.msn.com/en-us/news/us/over-the-counter-home-test...:

“Initial supplies of the over-the-counter test will be limited. Australian manufacturer Ellume said it expects to produce 3 million tests next month before ramping up production over the first half of 2021.

A company spokesperson said the test will be priced around $30 and be available at pharmacies and for purchase online.”