I ordered two boxes of 205m in March, online from a retailer. Supposedly in stock. A week later, I received an email saying they were on back order with no known date, did I still want them. While I really needed them then, checking elsewhere got me nothing so I told them to keep me on back order. I finally received them late July, but at least I have them now.
So right now my opinion is if you need primers, find someone who is willing to put them on back order for you and place the order. Just don’t expect them in a hurry. Best if you can forget about them altogether until the arrive.