Yes Norm, agreed, mower shops cant work for $30/hr so the feasibility of repairing store brand Chinese made trimmers is not worth the trouble. Neither of those blokes looked too happy when they were told to go away but imagine how happy they would have been if they got them repaired and were given a bill for $100.
This type of rejection from the mower shops is actually a good thing for us "home" repairers who can in turn repair the same machine for half the price and everyone is happy.
I had the same scenario 2 weekends ago were i fixed an Ozito mower with a B&S 450e series engine on it. The customers 5 year old son had filled the fuel and oil with water (in an attempt to mimic his father getting the mower ready to mow his lawn). Anyway, he took it to a reputable mower shop who told him point blank they don't repair Bunnings garbage.
Well the rest is history and $75 later everybody was happy.