$6.60 plus $5.49 shipping doesn't sound good at first. If I only needed a liter, it would be a hair's breadth more expensive than my local auto parts store. But since I needed 18 liters and they only charge $5.49, I saved about $50. You might find it cheaper than I did in my small Alaskan town, but it was a good deal for me. I received the right amount of the right product well packaged and quickly. Thanks!