ILuckyDog via eBay offers the Wireless Qi Power Charging Pad in Black or White for $6.28 with free shipping. That's pennies under our mention from two weeks ago and and the lowest total price we've seen. (It's a current low by $4.) It's compatible with select HTC, Lumia, Nexus, Galaxy, and Note models.
Expect shipping to take four to eight weeks.