If the poll is still open I would vote for the lowest price. I don't expect the price to rise very high on December because during these first few months the price is kind of stable there's barely any improvement and this could go on until the end of the year.
Through the voting majority have supported for the price to be around $8500 which is reasonable.
There's only 3 users who voted for $8500 and we can see that $5000 received more than that.