I just got done finishing my amber corners. I was going to try and get them from australia or europe, but decided to do it myself. I'm actually a lot happier, because the true EDM ones are all reflective as these are somewhat see-thru. I picked up an extra set from the local junkyard and bought Krylon 9023 orange glass pain from Here.
My total spent was:
corners from the junkyard - 5.00
9023 Krylon paint plus shipping - 13.00 (shipping was kind of high)
I know people can get these, but they will cost anywhere from 40-70 bucks.
Here is a pic of the passenger side one.