I'm charging $20 per slug and $20 per ball it's installed in. I prefer it to switch grip. I just installed all my stuff with it. Only thing i dont like so far. With switch grip you can drill inner sleeves with different pitches. With vise it they reccomend to drill all slugs at 0,0. Would this be incase you used excessive pitch and damaged the fitting ball? Anyone messing around with different pitches?