They say that you can build one for $13.
https://www.home-assistant.io/voice_control/thirteen-usd-voice-remote/
They also have on their roadmap that they’re working to see if they can build or engineer ~~out~~ or whatever an all in one, easy to set up voice satellite hardware as one of their next up priorities.
https://www.home-assistant.io/blog/2024/06/12/roadmap-2024h1/
For total clarity, I’ve never used Porkbun so I can’t vouch. But I like what I see on their website.