Gobe 77mm ND2, ND4, ND5 Filter Kit $42 via Amazon Deal

This popular deal is back from last week, and even better: Gobe USA via Amazon has the Gobe 77mm ND 2Peak ND Filter Kit (2, 4, 5-Stop) for only $41.64, when you check a 40%-off coupon box on the product page.

This is sold by Gobe USA and fulfilled by Amazon. Other sizes and filter variables are available (but not everything is as steeply discounted as this kits).

This is a great price for what appears to be nice 16-layer MRC filters. They also have ND7, ND8, and ND9 filters available for $32.40 each (after 40% off).