I think I remember a realtor in Edmonton a few years ago that would act as your agent in a standard client/agent relationship but for a flat fee he`d list your property on MLS and include your contact info. It was basically FSBO on MLS.
My understanding is that the EREB (or whatever they`re called now) came down like a ton of bricks on him.
The middle ground seems to be realtors offering to sell your property for a flat fee of 2% across the board.
MLS is run by CREA - the Canadian Real Estate Association.
CREA gets funded by yearly dues from it`s members - namely real estate agents.
So no, you definitely cannot list your property on MLS without an agent. You might have come across a super discounted flat rate option - which has it`s costs and benefits - but there will be a broker behind any listing you see on realtor.ca.
Well, most people are going to need even a pinch of help, that being said it turns from being free to be .5%, that's all........why would any realtor list for free on the mls when they are liable for many things.....