Its website still works and there's a gpg key, so it's a "shutdown" rather than shutdown.

The AirDrop requirement probably decreases its value substantially, but I think all these kinds of questions are kind of tricky to reason about:

https://news.ycombinator.com/item?id=43025038

This might be a weird corner case where Apple would outbid the grey market, but generally even though Apple comes in lower than the grey market (for these very specific kinds of vulnerabilities), the term sheets are different, and the rest of the terms tend to favor going with Apple.