HF roller cabinet longevity

I was a Mac dealer from 1984 to 1993 and have a MB9100 and MB9200 IIRC.
I was a Snap On / Sun tech rep from 1993 to 1999.
I used to wrench, in the late 80's, till the mid 90's... How can you make money, in a tool truck, anymore? ..Not knocking the profession, at all ...Just ,damn....