Is it possible for a high end manufacturer to overprice their goods?

For it to be really good it has to be expensive right?  

My current phono stage, a Schitt Mani, sounds great to me but it's so cheap that I keep thinking there must be something better because it's so cheap, but I'm not finding it.  If it were priced higher I probably would not be looking.  If I paid a grand for it I would make sure in my mind that it sounds great and wouldn't doubt it and I wouldn't be looking.  

I do not generally think that cost necessarily parallels performance in high end audio. I was recently at an old friends house listening to vinyl on a $1500 rig and it sounded great. There is a very real phenomena of luxury pricing designed to make people THNK it’s better when it’s not. That said the Rockport Orion is worth every penny. Joy and happiness achieved from music do not require anywhere near this investment. That is a different question. 

If it's one of the best sounding speakers in the world, it fits your listening room and you can afford it, what does it matter. It will be appreciated and give joy as much or more than a Patek Phillipe or other super expensive watch. It's all relative. Provided the speaker performs as one of the best. 

Who is to judge?

With most products and services, if at least some people don't complain about the price then it is probably not high enough.   If it priced too high, then it won't sell.  The purpose of most businesses it to make money so the good ones price their goods/services based on "what the market will bear" for the value provided.  With a group that will pay $250 for a pink fuse, the sky's the limit!  

Very few goods are priced as 'cost + small margin'. Goods are priced at market - as high as buyer may be willing to spend. So sure. Just look as Porsche tax