I splurged on a KAM press when we thought we were moving back to France a couple of years ago as I thought I was going to need to be doing a lot of sewing to keep us fed! I must say I actually use it more than I thought I would, I regularly think 'oh I could pop a press-stud on that to sort it out!' I probably use it more than my poor sewing machine at the moment
I think most people would soon pay for a hand pliers set (the pliers anqd a set of the studs).