I'm assuming social media is the answer...

I've bounced around social media watching many videos, but decided to follow along the BP forums.

Of course, the buyer could lose their job, but the spread between cash vs. mortgage has to be more than most people think.

Should the property garner no interest from their buyer list, their Realtor list, their social media posts, their offering on BP, LinkedIn, FB, various property investor websites, yard signs, etc. then they would probably be willing to share their fee.  

Consider an Installment Sale: By structuring the sale to receive payments over multiple years, you can spread the capital gains tax liability over time, potentially keeping you in a lower tax bracket each year.11.

Just make sure to do thorough research and fully update yourself on the changes in the local market to ensure strong rental demand and solid market data.Diversifying your investments by owning multiple properties spreads the risk and helps maintain cash flow.

Social media makes it look like everyone is an expert, but we all know that is false.

You state that everything is equal but are concerned that not everything is equal...It's very possible to see a price spread like that even with comparable coverage but it's also vitally important you work with someone that has your back to make sure you understand your coverage before you'd have to use it.  

Initial inquiry (FF, email, social media)2.

If they know you won and got it for less than their bid, I am not sure they will turn around and buy it from you for a 20k spread.