Primers have been in short supply for months on end. Prices way up and they are hard to find which is leading to hoarding. I have seen guys buy more primers than they have used in two or three years.

Do a web search for dealers selling reloading supplies. You will have to pay a hazmat fee to get them shipped to you. Here is a start. Call them I find that they often do not list items in stock on the websites that they in fact do have when you call.

http://www.gamaliel.com
http://www.grafs.com
http://powdervalleyinc.com

Another option is to go to your state Trap shoot and see if any vendors there have any for sale. Good luck and please do not clean them out so the next shooter can buy just a few. Hoarding is silly and making the prices stay far higher than they should be.