My brokerage has a list of names I'd be happy to refer to you! 

It’s part of the agent's duties to make this clear in the purchase agreement or the buyer's brokerage agreement.Clarification: The broker you met with was likely emphasizing that, according to the letter of the law or the standard contract language, the buyer is technically responsible for their agent's commission.

I co-operate a brokerage that works solely with investors on the financing side of things.

The NWMLS Buyer Brokerage Services Agreement breaks down how this works. 

Hey Chi, I own and operate an investor-friendly brokerage and property management company here in Clarksville, TN.

This money will also come from The One Brokerage.  

Every commission agreement between a listing agent and seller is negotiable and the negotiated percentage is determined by the Seller and it is shared buy the listing brokerage and the brokerage that brings the buyer. 

Find a new agent and brokerage. 

I closed with the One Brokerage.

However, I think from a financial perspective, it's likely a better idea to pay off the debt or add the money either to a taxable brokerage account or a retirement vehicle like an IRA.