I doubt your profit margin per ticket includes over head costs. Is sounds like it’s mostly direct costs that are included. If your shop truly had a 70% profit margin the owner would be loaded, for every 100k you charge customers they would be taking home 70k in profit.
8% is tiny. Like, microscopic.
In my industry, if your Profit Margin per ticket is less than 70% for a long enough time, your gonna go under. (Automotive Repair)
I doubt your profit margin per ticket includes over head costs. Is sounds like it’s mostly direct costs that are included. If your shop truly had a 70% profit margin the owner would be loaded, for every 100k you charge customers they would be taking home 70k in profit.