Well the issue with having 10 mining rigs is the cost of capital. That would be like 8 grand. Few people have that kind of scratch lying around. Also, you'd probably make more money directly investing that 8gs than mining.
Also, another thing to consider is the difficulty increases, which means that 8 grand of computing power will be worth less every 10 days or so.
But yeah, that's exactly my point. The price makes no sense. Please go through the calculations yourself. The whole point of this thread is to arrive at a fundamental value, which very few people seem to want to do, they get offended.
To me, that's signs of irrationality.