Find opportunities that no one else can find, close on transactions that no one else can close, identify value that no one else can see, execute faster and more efficiently than anybody else. 

Realtors are just middlemen in a transaction and can be replaced if they aren't responsive.

You just have to see how the custodians charge for your types of transactions.

We will cross off houses that are too nice(depends on what you are looking for), so we don't waste money on those houses.

Wholesalers (like me) who find deals/seller often partner with other wholesalers who can provide the other link in the transaction (buying party).

I would not recommend loopnet in general, as that is where properties go to die.Also much of the commercial transactions that do happen, are never listed.

If you provide any form of financing you run the risk of the CRA deeming the transaction an instalment sale which could have negative tax consequences for both you and the prospective purchaser.While the perspective purchaser is a tenant, treat them as a tenant.  

If you want your license merely to invest, then maybe a small brokerage where you just pay a fee per transaction as opposed to having a commission split.If you do want to do residential sales, of the big box shops there are 2 I think that are superior to the others.

I am looking for a broker I can pay a fixed monthly fee and pay no transaction fees/splits... so that If I buy or sell a rental portfolio I do not have to pay huge amount of transaction fees.I am also looking for a broker that understands the investment business and is comfortable with with special transactions (subject to, assignments etc. etc.).Any suggestions?

Hard not to drop five to ten pounds painting a fourplex in summer...and you can go cross fit with a full body snow snow shovel in winter.