Some of the advantages I see are it enables firms to focus on their core competencies.

Then he blamed the issue on the hot water heater itself (he claimed that the model I bought through him is not sufficient for my unit) when he was the one who suggested and procured this hot water heater to me. 

@Shawn CrawleyYes, they could procure a buyer, and their brokerage would get paid on a settlement sheet.

Tenant shall provide a certificate of insurance to Landlord demonstrating that Tenant has procured the required insurance coverage, within ten (10) days after the commencement of the Term of this Lease and within ten (10) days after any renewal or change in such insurance coverage.

are you a wholesaler procuring deals for investors ?? 

If the agent procured a buyer for the property, through listing on the MLS and marketing, then he is due a commission.

Every responsible broker procuring the execution of an earnest money contract or option or other contract who shall take or receive any cash or checks shall deposit, within a reasonable period of time, the sum or sums so received in a trust or escrow account in a bank or trust company pending the consummation or termination of the transaction.

Another factor is that you've already gone way down the path of viewing theme and negotiating numbers, and so if you brought an agent on now they may not be considered the Procuring Cause.As for whether or not you should bring on an agent to represent you, I would say that depends on how much experience you have doing deals.

The use of the corporate identity to procure labor, services or merchandise for another entity.19.

It enables me to do mail outs, list it on the property sign and ads, and send potential buyers there for info, etc.