Cheaper is not better.
I had gotten some door molding from Amazon. After getting everything installed I could not shut the doors and had to slam the trunk. Now they work fine. I did have some trouble with the outer felts. They curve up on the ends. It looked in the manufacturing process they made them straight and then tried to curve them leaving a pucker at the end. I was able to work them out on one side but the other I still have a pucker.