Iluckydog via eBay offers the Wireless Qi Power Charging Pad in Black or White for $6.34 with free shipping. (BenBenKim7 via eBay offers it for a penny more.) That's tied with our mention from two weeks ago and the lowest total price we've seen. (Outside of other eBay sellers, 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.