It's sole purpose is to draw you in to where you see their advertising and promotional materials.The score you get from CreditKarma uses a Vantage Score formula, not FICo. 

They promote creative ways to extract revenue from landlords and tenants.

I had never heard LLC's being promoted as a Tax aid.

They all cross promote each others programs.

The entire lecture is strategically planned to stimulate the emotion and promote to buy.

If you put too much faith in them, it may promote complacency in that you no longer feel the need to take some of the matter in your own hands.

Your married friend and his spouse evidently got promotions and/or raises that increased their total taxable income, and consequently, their tax bill went up.  

Often the other side of stenton in cedarbrook, etc, is often mistaken as east mt airy as it is often promoted as such.  

Other things to look for with any brokerage is E&O insurance, involvement in real estate community/legislation, promotion scale, mentoring opportunities, mandatory meetings/floor time, 'hidden fees' (desk fees, copier fees, transaction fees, franchise fees) and marketing/lead generation tactics.

Sounds like a good deal.This is just a thought.To promote the idea of "Owner Finance" to him.See if he has spoken with his accountant on how much tax he would have to pay and how it could be better for him to receive the payments spread out over a few years instead of one large sum.Good Luck