The Kensington StudioDock for the iPad Pro was well received (see my review here), but the price point was really the major issue with the product. The same was largely true for the Kensington StudioCaddy.
However, Kensington has put the StudioDock on sale for US$219.99; the regular price is $399.99. The StudioCaddy is now $99.99; the regular price is $179.99 on the Kensington Store.