This beats the heck out of the normal $50 - $80 you see most of the time
https://www.armsunlimited.com/GLOCK-17-18-19-26-33-round-9mm-Pistol-Magazine-p/1833.htm
https://www.armsunlimited.com/GLOCK-17-18-19-26-33-round-9mm-Pistol-Magazine-p/1833.htm