I know broker fees are $500 so $12,500 in commission?

@Shmou N.ShmouYou can collect Rent and all other fees; Utilities, parking, or any other fee needed.We don't currently have a notification of the deposit but I will add it to our develoemt roadmap and you will see it in an update.

From a tax standpoint, there are additional disclosures to make when selling a business asset for less than fair market value to a related third party. 

I was one of the fortunate ones that was able to get out of the contract and after all expenses (forfeited deposit, legal fees, holding costs, etc) lost less than $20k.  

Since part of your property is a rental, I believe a portion of your mortgage interest should be a tax deduction unlike your other debt.

They also know about real estate so less likely to charge you extra fees to get an appraisal or BPO because they can estimate the value themselves.

If you're new to investing, keeping an eye on property taxes and HOA fees in this area is also key. 

It's an estimated cash on cash return given current rental rates subtract expenses assuming 7% interest rate, 10% management fee, 5% repairs, 5% capex and other expenses like mortgage, insurance, tax. it's a estimate to tell you what properties to analyze vs ignoreyou can see the are pockets of negative returns as well as pockets of positive return. this is to supplement the data @Devin Conley provided

What are the tax ramifications of a sale, if any?

I recommend that you find a trusted or recommended Mortgage Loan Originator (MLO), who can give you options for property-based loans (mostly investment loans) and they don't use your taxes but the P&L of the property.