Despite bringing more copies of the Starfinder core rulebook to Gen Con than any other single product before, Paizo has sold out of them after just one day.
Luckily, as they say, copies are out there at local game stores.
Here's where they were almost sold out:
Here they were towards the end of the morning, with what Paizo termed "a big hole in our inventory":
And here they were at the start of the day: