It’s just something to keep in mind.

Tailscale is also a good option. Headscale will also be good for this once they finish the implementation.

Netbird’s reverse proxy is still in beta and is free, so when it goes GA the pricing may change. Otherwise this is a great option.

Most of the time you can pick up badges afterwards on second hand markets, sometimes defcons official shop has some leftovers.

I have a strong feeling the chips will be available for purchase afterwards. This whole thing feels like a product launch.