If you are a fan of Kenko filters, their Kenko Nyumon Slim Ring UV MC Filters are on sale for the very specific price of $11.14 at Amazon by Amazon itself in these sizes: 37mm, 39mm, 43mm, 46mm, and 49mm. Limit up to ten units per size per customer. The other sizes go for more.
This is not a Prime or a Lightning deal. Everyone can buy them. It’s a filter party 🙂