PPG Base/clear paints online??

I needed to paint my trunk lid on my Duster recently and went to NAPA and they used a color scanner to match up the color on my car. I got a quart of paint manufactured by Dupont and the price I paid for the paint, clear and reducer was $180.00 + tax. The color is almost a perfect match and if you did not know that I had the trunk lid painted you wouldn't be able to tell the difference. I was told I could have purchased a gallon for $360.00