Not Johnny_Chimpo, but one source was here:
https://www.capitalcartridge.com/product-p/smp-q05000b.htm
Another source: https://www.targetsportsusa.com/cci-small-pistol-primers-500-case-of-5000-14-p-111600.aspx
0.11c/primer or $119.80/k. Kinda high, but they are available.