Answer:
It is expensive.
Answer:
Cheap or expensive depends on the boundaries you set for the question. As an example if you consider only the cost of buying gasoline (a processed fossil fuel) at the pump you can decide on its relative cost against your own finances which might make it expensive, or you can compare it to othe purchases (a litre of gasoline at about $1/L is much cheaper than $30/L for Scotch whikey). or you can expand the cost toincludee environmental damage caused by oil and gas exploration, drilling, processing and our automotive culture which might make it ,if not expensive, an unskilled use of rare resources.