In the past version, the base materials were also tradeable materials (you could ship them for profit). In the update, the base materials are separate commodities, and they have the same price everywhere (you can identify them by this attribute). This guide: http://discoverygc.com/forums/showthread.php?tid=80349
has the NEW base commoditiy names, ayou have to use those stuff to build bases. In the WebBrain (https://webbrain.com/brainpage/brain/943...13DA2F6#-2), the commodities are listed in OLD NAME (NEW NAME) format, so you should use the names in parentheses, as those are the current base commodities.