Shopping for a 240-volt, Level 2 wall-mounted electric car charging unit? Then check out Home Depot's online shopping site, where consumers get to choose a variety of units with prices that start at $749 and top off at $9,815.

Granted, these are very different charging units, with the $749 price point coming from the Schneider Electric EVlink 30 Amp Indoor Electric Vehicle Charging Station 1st Generation – Traditional Model. For $9,815, you can buy the Siemens SEVD2021 Community Dual Level 2 Bollard Mount Commercial Electric Vehicle Charger. This would be ideal for a condo or apartment parking garage, or at a workplace employer-provided charging station.

Over the past year, the Home Depot's charger product selection has climbed from five chargers to 30. Along with Schneider Electric and Siemens, other manufacturers with offerings include Leviton, Evr-Green, Legrand, General Electric, Hubbell and Eaton.

There's only one Level 1 charger and a couple of installation kits to choose from. You can't find a DC fast charger, but those are awful expensive. Asking consumers to spend $749 or more for a home charging unit (and then there's the additional cost of installation) continues to be a touchy issue. After all, a 30-percent tax credit worth up to $1,000 for consumers expired at the end of 2011. Some car shoppers looking for good deals might like to see the cost of charging stations rolled into a car's monthly payment, but this is yet to happen.