People will probably buy the heck out of them, but I get your point. I wonder what the price will actually be? You can find OEM Glock mags for $20, so these would have to be proven just as reliable, and hopefully less than their MSRP.
I'd want to see these mags in person. The Glock mags I bought in 2013 were nowhere near the quality of those that came with my gun circa 2003. They feed reliably but the lips are out of spec and spread apart under the pressure of a loaded mag, so the last few rounds can be tricky to load without popping out.