Using a RE Attorney Instead of Agent?

[Mike Miller]

Most of the articles online I googled are referring to the pros and cons of agent vs attorney when selling a property or finding one. Obviously an agent is best for marketing and searching. But when you are talking directly with an owner and they want to do it off market to save an agent commission, I would like them to have some form of representation so they dont come back saying I deceived them or whatever. 

So I know its usually charged hourly, but how does a RE attorney's total costs compare to using an agent, for one home transaction? Say the 5% agent commission was going to be $80K HAD they gone on market, is an attorney much less than that typically?

Does the attorney handle both parties for the exchange, me and the seller, or do I have to hire my own for my side?