There are los of factors to consider.

It may sound nice to pay a 6% management fee but the extra fees can add up to be more than the other company that charges 10% with no additional fees.

The only known factor is you cant capture appreciation if you no longer own it. :)

However, for further clarification, if I were to subscribe to CoStar, assuming a membership fee, would it negate the necessity to directly contact the leasing broker? 

Also ask if there is a cap on assignment fees.

Charlotte is off of the charts, we have to write multiple offers (well above list, with stupid-crazy due diligence fees- plus, our contract makes buyers cover the appraisal gap if it doesn't appraise)... it's tough for buyers here.

I'm not looking to sue people and get tied up in expensive litigation fees but is it something I should consider?

On the refinance you do not pay points if you use a FDIC bank or credit union so you avoid the BS fee's.

A Good CPA will save you money over their fee. 

You just need a purchase agreement between the two of you with clear terms that either an attorney can draft or you may be able to find an off the shelf generic one (I never recommend these as they are too generic and don't protect either party), or you can ask a broker to prepare one for a flat fee.