The Verge reported that the wireless inductive charger accessory for the Nexus 4 (which became widely available just recently itself) is now available for $59.99. I was giving it some thought as a possible purchase when I remembered that I had an Energizer Qi-Enabled 3 Position Inductive Charger (Amazon link) that I used tested with an iPhone 3G a couple of years ago. The Nexus 4 also uses the Qi wireless charging technology. So, it seemed like it should charge using the Energizer product.
Initial testing indicates that it does. Placing the Nexus 4 (in a case) on top of one of the two Energizer Qi pad’s charging areas started charging the phone after waiting a few seconds. You can see in the photo above that the Nexus 4 indicates it is, in fact, being charged while sitting on the Energizer Qi pad. The current Amazon price of the Energizer Qi pad is $68.24. So, it is $8.25 more than the custom dock for the Nexus 4. However, it can charge two Qi devices at the same time. And, it is not limited to the Nexus 4 form factor.
Disclosure: Energizer provided the charger, a charger case for a BlackBerry, and a charger case for an iPhone 3G for evaluation.