Is it crazy to use a realtor to buy a non MLS property?

[John Williams]

Just asking the question. It it totally crazy to use an agent that you have been working with all along to handle the purchase of an "off market  property advertised that you found? 

I know that a bunch of people are going to jump in and say why pay a fee to someone for something not on the MLS? But it seems to have some value to me, as I'm not the best negotiator myself and I feel like I need someone with access to data that I don't have to make an informed decision.

Is that just dumb if I'm paying a fee for someone to handle the paperwork and negotiating for me? 

Interested in your thoughts.