Just for fun, since Amazon has started advertising the 6000L for $699, I did a quick back-of-the envelope calculation to see what the other models will cost.
One Japanese site advertises the following prices (in Yen)
Assuming $699 for the 6000L, and that the ratios are the same in the US, I calculate $740 for the 6000W and $635 for the 6000N.
(The same calculation also reveals the C860 should cost $598 for a US version. Grrr...)