I staple A LOT of boxes in my business...
I bought one of these
I spent about an hour cleaning greasing and oiling. Then did about a hundred boxes in a few minutes. its in like new condition. Got the unit just in time, we're doing a semi-load of boxes next week.
I figure I spent a bit less than 1 cent on the dollar for new value. Of course, I'm the only guy on this NG that would even want one.
Karl