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Here's the full announcement with pricing and lots of large and impressive marketing words like empower and commitment.
It's pricey at $249 "per quarter" (i.e. $996/year or $83/month) — but maybe worth it, especially, if you want your station to be available on Sonos and other home devices.
They also have lower-cost pricing for "educational and non-profit broadcasters". If your station gets the discounted rate let us know what it is? We're... curious.