DSG Arms has the Lancer L5 30 round AR-15 mags $ 9.99 plus free shipping over $49. Great price, great mag. The caveat is that you need to set up a login to see the low price. https://dsgarms.com/ That price is only for the black mags, not the colored or translucent ones. So you need to set up a login and then navigate to Lancer mags. They currently also have the 10 pack of Pmags (Gen3 non-window) for $95 and the 40 round Pmag for $18.95 in case that's your thing.