Dual agent, good or bad way of closing a deal?

[Maxim K.]

Hello fellow real estate experts .

Here is my situation , I found a property (duplex) negotiated selling price and pretty much moving forward with a deal! I did everything without real estate agent. Now I’m at point when I have received paperwork to sing from SELLER agent

It says he is a dual agent and represents BOTH seller and buyer , there is another option BYER IS NOT REPRESENTED BY A BROKER . Should I keep everything as seller agent insisting or should I choose an option of NOT REPRESENTED BY A BROKER ? Maybe I even should bring a buyers agent into a deal ?

I would love to have an advice on this!

Thank you in advance.