I've not had any trouble finding them. Paying for them, however, is becoming increasingly challenging.
L
Most of the on-line stores seem to be out of stock on primers of all types. Founds some at my local retailer over the weekend, but there’s definately limited supply.
And all of the cheap milsurp is long gone, too. This is not necessarily a bad thing: motivating more people to obtain the equipment and skills needed to “roll their own” may have some pretty big benefits down the line.