Wasn't sure this was going to get some decent discussion.
I think 200gc on Red Robes/Mantles could be a fairer price. 125gc on Etched Shields. Also like to see Kandori Necklaces maybe upped a little as I've noticed those are never available for purchase either. Perhaps 75g on them.
Sids/Gchains around 250 to 300 is probably a better option.