Hey, one of the people working on Tangara here. The case we're shipping with will be CNC'd polycarbonate, though the same design also works for home 3d printing.

The price is a lot of little things adding up, and we want to be able to do smaller runs post-campaign and still have it be worth our time. I also wish it could be more affordable, but that's how it be with indie electronics.

Good luck if you do decide to make a little podcast machine! Just be aware that afaik ESP32-S3 can't do bluetooth audio (see: https://github.com/espressif/arduino-esp32/issues/8675).