I don't know where or when they will appear, but may I respectfully suggest that buying primers a few at a time is begging for trouble.
That said, maybe your application for the match primers is very limited, and maybe 2000 is a five year supply.
But I buy my primers several cases of 5,000 at a time and like to stay 10 to 20,000 primers ahead of usage.
Last week I bought 10,000 small pistol - but I also bought just 2,000 small rifle magnum for a limited application I have. That 2000 will last several years.