For a podcasts with good audio quality(which is usually a case for podcasts) you probably can use speech recognition tools that will cost you a fraction of this price. They are pretty good nowdays
ADDED: Machine transcriptions are pretty good for a lot of things such as search and quickly skimming content. But if you want something that people can read as an alternative to listening to the podcast, you pretty much have to use human transcription or budget a bunch of time to fix up.