That's not bad at all... hell I was looking at well over $150 in materials to make similar ones (was considering having some locally made). After we added up the materials cost and labor quote I was approaching $400 really quick without even considering coating/finishing.

My plan was to have the welder build to print since I can do all of the measuring/drawing. After my preliminary cost estimate I stopped persuing it because I realized I was going to spend almost as much as the 4xG sliders, but being the "first" unit they probably wouldn't fit as perfectly since 4xG went through a few revisions to really get the body lines to match up nicely.

So in that respect, I dont see their prices being as unreasonable as you're making them out to be. But i guess that opinion is subject to regional influences.