How much do you spend on gasoline in a year? Now multiply that x10 for ten years. So that is the $$ number to compare with the price of the battery pack.
People find $50 per week (whatever) for petrol, while not everybody has a chunk sitting in their bank account for a one hit battery deal. You forgot to mention charging costs as well, some countries like Australia, electricity rates are murder.
I'm not here to argue the price, which I can afford, but being new to the scene I was just a bit surprised by it, and since I can buy whole brand new cars for well under $15000 with 33kwh batteries and 110hp, I am trying to find where the balance point is. I have to buy 5 cars at a time though to get the fleet purchase Government new energy subsidy.
EVWest has a complete VW Beetle kit for $19,000 and only 22kwh for comparison. Their other kits are $7000 with no batteries.
http://www.evwest.com/catalog/produ...ucts_id=217&osCsid=l27a9nhdal3b4cu9mukh7srev5
Just on batteries, I went out this morning in Zero temps and light snow in the Tesla and a warning notice came up that battery use would be very high due to the very low temperature, yup, chewed through the charge at twice the normal rate.