Primary has Pmags for $10.45. Not the $8-$9 we have seen in the last few years but not bad right now.
https://www.primaryarms.com/magpul-pmag-30-ar15-m4-gen-m2-moe-5.56-nato-magazine-black-polymer
https://www.primaryarms.com/magpul-pmag-30-ar15-m4-gen-m2-moe-5.56-nato-magazine-black-polymer