Five years ago, PSA had a sale on these same magazines that had a PSA logo for $9.99 each if you bought 10 of them. Inflation has gotten really bad.
The reason I bought them is for the steel followers. I have some Colt pre '94 9mm mags. They have this same steel followers. When Colt switched to LEO only 30 round mags in '95, Colt went from parkerized to blued and from steel to plastic followers. After the end of the ban in 2004, I bought some LEO marked mags. The plastic follower was not anti tilt. I think the anti tilt steel followers are so much better.
Scott