I seem to recall that some schools (not many) charged this way back in the old days when I was training. However, if you looked at the total cost (dual and solo) of a typical PPL there was not a lot in it.
How does it compare with other training organisations?
$215/hr for a Traumahawk is a bit of a shock compared to the $20.50/hr dual that I paid for a C150 in 1973.
Call it a 10 fold increase.
In 1973 you could buy a Holden Kingswood for $3300 compared with what today? $35-40k
So maybe $215/hr dual for a trainer is not so bad.
Dr 