Is this worth $400?

I have been looking at getting into gravel + singletrack riding. I found what seems like a good deal on this "Ground Up Designs Custom Steel 29er converted into a gravel bike". I have been able to find very little on the internet about Ground up designs other than that they are supposed to be high quality. Would love any insight anyone could give. Also was hoping to do some bikepacking on it, any insights if this would be a good bike for that?