Take any regular designed device and add a retro look and automatically the price increase. Here is the Damnation Steampunk PC dubbed the Telecalculograph Mk II which was created by steampunk artist Jake Hildebrandt using a cutting edge PC.
If you want a retro-looking PC such as this you will probably have to build it yourself, the one above isn’t for sale. It is being given away as part of the promotion for new steampunk game Damnation. In order to enter you have to show your love for Steampunk by creating some kind of video, picture, or art installation that shows your love.