What we do is to do a pre-sale inspection for seller, $20, to make sure the owner know is there any potential issue when selling the vehicle so the price can be adjusted. At this time, we won't issue safety certificate until the car is actually sold.
Because you did a pre-sale inspection for $20, so when the Ontario Safety Certificate is issue when car is sold, its only $55.
Buyer has to pay HST (i.e. 13 %), and it is not based on "大约5000$", it is based on BLACK book value. I.e. car residual value. If the used car is bought from a dealer, then it is based on the sales value.