Your best bet is to source the individual components yourself. The glass shelves can be ordered from any glazing company, make sure you order thick enough glass ie. 10mm, 12mm, 15mm and have all the edges polished and the glass is toughened. The brackets can be sourced from several companys but make sure they take your thickness of glass and the weight of each component, most brackets will give an indication of the maximum weight. If this is too much hassel there are one or two companys that supply wall mounted glass shelves but they are expensive!
Sorry to dig up such an old thread but I am having the same problem 4 years down the line! Thus the above link to Vogels' brackets no longer works. Is there any other alternative bracket for some custom-cut glass?