I have 5 magpul 30rd pmags and 4 thermomold 20rd mags.
Pmags r $15 each plus shipping and thermomold are $5 plus shipping. I am not breaking them down for rebuild kits and make sure you know your state laws.
I have 60 rnds of winchester 55gr .223 VamitX. Its not the cheap stuff so .75/rd plus shipping for this stuff. Its $1 a rnd at walmart.
Any questions feel free to ask.