I have never really looked at my tool changes. I've had some of these machines since 1998 and have run production on them for the last 3.5years. I should be there or close to it.
I think they are wonderful machines!
Although last year I had to spend nearly 40k on machinery repairs, but it turned out that we had some stupidity issues regarding passing of information to the boss (me) and after these were worked out some employees eliminated we have had no more issues!
I think the most I've spent on maintenance this year has been 30.00 for some new way cover wipers (oh and my accounting year starts in September so don't remind me its only January )