Years in radio stations, in one job after another, taught me the same lesson every week: the work is not the clever part, it is the hundred small ones. Cutting the pauses out of a long take. Getting a voice recorded in somebody's kitchen to sit next to one recorded in a studio. Putting a bed under it, checking the level, sending it before the hour.
The programs I did it in were not built for that. They were built for music, or for film, or for selling a subscription - and they all made the hundred small things slightly harder than they needed to be. After enough years of it, the shortest way to a better afternoon was to write the editor I actually wanted.
So Seston is not a product with a user somewhere. It is the editor I use for my own work, every week, and that is the whole reason the awkward parts get fixed: they are awkward for me too. Charging for it would not make it better. It would only mean deciding who is allowed to have it.