$500 would be cost of charger only. Wiring it can be $100 to $2000 based on how far and what has to be torn up. You might have to cut concrete or asphalt to get wires underground. Most cities will require permits and inspections. After installation, costs should be low. Currently most vehicles have a commuter level battery. Breakthroughs have been promised but promises are cheap. It will come if they get mainstream level.At under $500, it's eminently reasonable... and they wouldn't even have to charge rent for the space, though they probably would.