Jafant,
When I am at a audio show and looking at a ton of gear I find myself trying to figure out what it cost to make the Item. Of course it's only a guess and I don't have actually numbers. I have worked in manufacturing before and I remember what it cost for us to make a product and then seeing the product on the open market. The company I worked for was owned by my sisters husband so I had inside information on what it cost to make an item. One popular item we made in the 80's and was distributed worldwide was a fashion Item. The parts came from China but the units were assembled in Southern California. The Item cost with parts and labor included was 7.00. The retail price was 69.95. So like you said about a 10 times markup from what it cost to it's retail price.