Primers do hit the market, but they appear and disappear so quickly. You hafta be lucky. About the only thing to do now, is to find vendors that take backorder, and get in line. Another tactic is to get in line for email notifications. There is brass out there, and bullets, powder is spotty, and primers are to die for. Here again, the Rooshans are starting to fill in some of the gaps.
Another thing, the big retailers are getting some ammo, but limiting the amount that can be purchased (e.g., 100-200 rds), to keep ppl hittin their websites.