Can I purchase additional transcription hours if I'm on a Descript Free plan?

Users on a Descript Free plan are not able to purchase additional transcription hours beyond the 3 complimentary hours that are provided as a trial. 

Once these hours have been exhausted you may upgrade to either a Producer or Team plan which provide up to 10 hours each month of automatic transcription.

You can upgrade your subscription by visiting https://web.descript.com/subscription and clicking the Edit button on your Drive Plan.