There have been multiple threads about reselling being permitted here. My suggestion is adding in terms of service that deep fake voice construction (reusing someone’s voice) without their consent is not permitted.
It is one thing to record your voice, be paid for a recording and waive your rights to that recording.
It is another to record, be paid for that and for your voice to be reused for different narration and context without your knowledge or consent ad infinitum without compensation.
A reseller on this site has, among the voice samples available, voice samples that are artificial/slightly robotic sounding. One of the offered services for that reseller was text to voice.
If the buyer request clearly indicates that the seller’s voice can be reused for a different script in the future without additional payment or consent, fine.
But I think it should be in the terms of service that doing so without consent is disallowed.
Also, if a seller offers a text-to-voice gig, the original narrator’s consent to this should be verifiable.
I’m not saying it would be an easy task for Fiverr to investigate this!