B&H has discounted the Apple iPhone Lightning Dock on their website this week. It goes from $49 to $24.99, which according to their website is a saving of $24.01. As of right now, this only applies to the Space Gray version of the dock.
The Rose Gold version also received a discount and is now priced at $29.99, which is a saving of $19.01.
Both of these products get free shipping and remember that if purchasing from an Apple device that has Touch ID, that you can use Apple Pay for payment. This applies to the iPhone 6-7 Plus, iPad (Mini 3-10.5-inch iPad Pro), and 2016 MacBook Pro with TouchBar.
It is currently unknown how long the deal will last, so make sure to take advantage of this sale while it is available.