For the most basic conversion kit, you can plan on spending around $3,500.00 plus batteries. Costs go up from there depending on what you want. An average conversion by the do-it-yourself person will run around $8,000.00 to $10,000.00.
If you want to purchase one from a conversion shop add around $3,000.00 to $5,000.00 to the kit price. If you go this route be sure and shop around and view some of the shops work to make sure it is of professional quality. You CAN tell the difference!
Your vehicle of choice for the conversion will determine the final costs (i.e. old, new, condition).
If your waiting to purchase one from a major auto manufacturer your going to have to wait about 3 years when they will be under the gun to sell electric vehicles in California under the ZEV Mandate requirements. Right now they are only making basically hand made cars and selling them to the government, utilities and other companies to help test their concepts and work out the bugs. These vehicles are outragously priced and not affordable by the average consumer.