Krisp occasionally offers during Black Friday (November). That drops the price to ~$60/year. For $5/month, you get official support, cloud sync, and no risk of a ban. That is the closest you will get to a "lifetime" value today.
Krisp.ai is an innovative platform that uses artificial intelligence (AI) to remove background noise, echo, and other distractions from online meetings and calls. It supports various video conferencing platforms, including Zoom, Google Meet, Skype, and more. krisp.ai lifetime deal