Thought I would share this... just put in an order for a 10 pack of the Okay AR mags for $99.95 at Botach. Free S/H outside of Nevada. Seems like a good deal to me!
https://www.botach.com/okay-surefeed-ar-m4-5-56mm-30rd-magazines-10-pack/
https://www.botach.com/okay-surefeed-ar-m4-5-56mm-30rd-magazines-10-pack/