I would lean towards good, the G not being closed would be my biggest concern. I think that the sharpie was a little thicker, so it looks a little longer and "off" without the closed G (almost comes off looking like another hump from the N) everything else seems to match up well to me.
I would still pass, there are a lot better examples out there.
I will say, after seeing the listing and the price...I would be hard pressed to believe someone would sell a legit one for that low. So I would say probably best to stay away.
I don't believe this is authentic. The biggest indication is the way the letters flow into each other. Specifically, the R into the I seems to rounded. No good, IMO.