If you start to apply a train of thought into how most things are made, it all seems cheap.
Think about fuel, mining oil out in the ocean, rig workers wages, the cost of the rig itself, then transport, refinery, further transport, distribution, and then into tanks waiting to be pumped, all with more employees at each stage, all with building, electricity and water costs, plus any additives they put in, all for $1.50/l
It boggles the mind sometimes.