As nice as wireless charging is, a lot of people go through the entire lifespan of an Android device without ever using it, because the accessories to enable it are bloody expensive. Wireless charging pads typically start around the $40-50 range and go up, and for that kind of change, you can fiddle with a MicroUSB plug once or twice a day. But if you could get a wireless charging pad for under ten bucks, would you? If your phone uses the less popular PMA standard, you can.
Amazon has this Duracell Powermat wireless charging pad for just $8.82. Considering that the original price was $50, it's a considerable discount - the seller is probably clearing these things out. There's a big caveat, of course: just because your phone has wireless charging doesn't meant that it will work. This is a PMA-compatible pad, so all of the gadgets with Qi wireless charging (like the Nexus 4, 5, and 6, various DROID phones, and the LG G3) won't work.
But there is one major upcoming phone that works with PMA: the Galaxy S6 and Galaxy S6 Edge. Samsung included both Qi and PMA wireless charging standards, for pretty much exactly this reason. Oddly, the AT&T version of the LG G3 (and only the AT&T version) supports PMA charging too. Various cases and sticker adapters for PMA are also available.
Only the black two-device pad is set at this low price on Amazon at the moment, though you can get the white version for $10.05 if you're feeling extravagant. The primary listing is "fulfilled by Amazon" and comes with free two-day shipping for Prime customers.