Be careful with your pricing, in sept. 2012 germanium was only at 540$/kg, so without knowing the charts, it might be possible, that its price is highly volatile. I don't know.
hmmmm..... weird... I have never heard of it being used as a wire. I work with it in a mono/poly crystalline form. I thought it was a semiconductor too. I would imagine the wire would have to be an alloy then?