I personally don't see myself investing $1050-$1750 in magazines for each pistol. I get training. I'm at 17 courses currently in 3.5 years with the 18th next month at 2 days and hopefully a 3 day course in September if I can get around work. That said I have typically 5 mags for training for each pistol and another 3 I use for carry. Even in full day courses I don't get the point in tens of magazines. Every course allots time for reloading and even if you don't need to reload you're still going to be sitting/waiting for others to do so. I also don't see reloading as wasted time. I use it to think on my recent performance, write down notes for later, consider the drills I'm about to do, and heck talk to the people around me, from whom I often learn a lot (socializing is nice too).
In full day courses even with reloading 5 mags the great majority of my time is still spent on the line or going over material, not reloading. If I had more disposable income I still don't think I would have that many magazines because frankly storing all of that would be a pain for me and honestly it doesn't take me that long to reload a magazine. And while I understand the importance of repetition and building muscle memory (or developing neural pathways), I do think some courses go to certain round counts more for advertising than actual benefit. You can get more repetitions in after the course is over. I'd rather see students fully understand the why and how behind the technique, and that doesn't always mean pressing triggers. At a point you also start fighting your own muscle fatigue and can potentially ingrain the technique poorly as a result.
I'm still inclined to believe the OP's story even if my own methods are different. Maybe his disposable income is just greater than mine, and if so great. I hope to hear how it goes for his pistol.