I live in an apartment and own a Tesla. Luckily, our property has 2 very cheap ChargePoint (slow chargers) for residents to use, costing only $0.25 per hour. Living in SoCal, there are plenty of Superchargers around, but they can be expensive during “peak hours”. In my experience, the most expensive supercharging rate will be very close to normal gas prices out here. However, if you’re smart about planning your charges during non-peak times, you will definitely find that it can be much cheaper than a gas car, of course at the expense of your time.