Last week I checked the exchange rates at various places. The result may surprise you

Scottia bank by burger king : 111
Western U at HiLow 118
Cambrio by Burker king 120
NCB, the blue building at the SW corner of HiLo plaza 123

Did not check Banmark on OneLoveDrive.
I never change $ in the ValuMaster parking lot, nor at the Chinese market next to BK which I believe is illegal yet I've seen a money changer from the parking lot swap theirs there.

Scottia bank (which has an ATM outside) was a surprise, a rude one. The quote is from inside on the wall.