@NatureMC If you are looking for the cheapest way to host you podcasts, shared hosting might be a good solution. Or you can self host using, for instance, YunoHost, it even runs on a Raspberry Pi.
On the other hand, our hosting offers provide CDN, storage, bandwidth, backup, updates, unlimited podcasts, unlimited users, monitoring... So no, I cannot let you say that they are expensive. That is what is costs.
@NatureMC If the price is what matters the most, go with Spotify for Podcasters, they're 100% free. But free as in free beer, not free as in free speech.