Gobe USA via Amazon has the Gobe 77mm The Collection 1Peak 10-Piece Filter Kit for $58.37 and the Gobe 77mm ND 2Peak ND Filter Kit (2, 4, 5-Stop) for only $48.83, when you click a 45%-off and 40%-off coupon box, respectively on the product page.
This is limited time deal, sold by Gobe USA and fulfilled by Amazon. Other sizes and filter variables are available (but not everything is as steeply discounted as these two kits).
- Gobe 77mm The Collection 1Peak 10-Piece Filter Kit for $58.37 at Gobe via Amazon
- Gobe 77mm ND 2Peak ND Filter Kit (2, 4, 5-Stop) for $48.83 at Gobe via Amazon
This is a great price for what appears to be nice filters — additionally, the ND filters are 16-layer MRC. Compare with a price of $150 at B&H for the 10-filter kit.