Mine doesn't have any dust in the OVF. I posted earlier but you may have missed it but is the dust only in the OVF? Try a rocket blower on it and see if it can get some air through the edges. If the spots appear only in the EVF then it may be a dead pixel but that is super rare. New they are down to $999 on Amazon and I am seeing used ones hit $800 now.
yeap that's the price I saw on Amazon too 

I said stop using them 

