I slowed down using it for a bit, but now with small pistol primers basically unicorn horns, unless you want to pay some scalper on GB 10X retail, and the last I saw, 9mm 115 gr was 0.65-0.70 cents a round, it seems to make sense again. Now this costs what 500 rounds of practice ammo would cost. No brainer.
I still think it is helpful, and it did point out that my weak hand grip was well, weak. The dot was making circles, and tracking up and down.
Slowly getting better .......