Amazon Germany has Black Panther limited 3D steelbook (region free with English audio) for $21.62 shipped. A great deal when you consider the non-steelbook edition is currently $26.48 from Amazon UK (the 3D edition was never released in the US).
Note: You can choose to pay in euros if you have a credit card with free foreign transactions for an extra small discount.
https://www.amazon.de/Black-Panth…+steelb