I bought lens and Batt Grips from tokyo 1.5 year back. The price is not cheaper but there is points system which can be used to buy other thing or offset your next purchase. In this way, thing may appear cheaper if you buy a lot however you need to plan your purchase.
i.e
1. buy most...
thanks for the comment. I agree with you that most of the pictures are underexposed. As for colour, i am having a big problem as it appear differently in my notebook and desktop through both monitors are calibrated with spyder pro II.