Are There Any Other Fees/charges when Getting Lip Injections?

Generally, clinics provide a per syringe price, and this can be anywhere from $550 to $850 in Toronto, Ontario. This cost generally includes the injector's fees, but it all depends on the injector as they determine pricing.

It's not a typical way to charge, as most offices will have transparent pricing, but each office sets their own policies with regards to pricing.  

Different offices may have different ways of charging patients for fillers, like Juvederm.  As with your doctor, some may have separate charges for the the product used and a fee for the injection.  In my office, with most of the fillers, the price quoted is the total (product cost plus treatment fee).  To be on the safe side, next time you are treated somewhere, be sure to ask if the cost includes the treatment fee or not.