Amazon currently has several pretty good deals on Belkin Wireless Chargers as listed:
Belkin Magnetic Wireless Charger (WIA005) for $14.99
Belkin Magnetic Wireless Charger (WIB003ttBK) for $19.99
Belkin Wireless Charging Pad 7.5W ( F7U027dqWHT) for $22.99
Belkin BoostCharge 10W Fast Wireless Charging Stand (WIB001ttBK) for $24.90