You can now buy the new Moto Mod Style Shell with wireless charging for just $40
Best Buy: Moto Style Shell Case with Wireless Charging for Motorola Moto Z Family Cell Phones 89600N
Amazon.com: Wireless Charging Moto mods for Motorola Moto Z4 Play Z3 Z2 Force Z Droid Phone, Style Back Shell case Cover Black : Cell Phones & Accessories