Classic firearms also wants $17 to ship. The cost of 5 magazines would then be $17 and change per magazine once shipping is factored in. I can go to 44mag.com and get a magpul magazine for $13 and free shipping.
Look, I'm not trying to get into a argument here with you. If you don't like the plastic mags, fine don't buy any of them. I used to poo poo the plastic mags too back when I could get a com block steelie for $7 and $5.99 shipping. Now that the mags are starting to get up in price and scarcity (relative), everyone wants a small fortune to ship via the most expensive carrier, and I've had some real personal experience with properly built poly mags (circle 10) my thinking has changed.
I applaud magpul's efforts. IF they can make a metal reinforced AK mag to rival a bulgy circle 10 I will buy a lot of them. You can still choose to buy none of them.