those plugs work well! I have them for about 3 years now and they look as the day I installed them. Yes they are not cheap but if I had to pay to fill in the holes and respray in the body shop the price would be 100 times more!
I also had 6 holes to cover, so don't complain about just 2
I had to buy 2 extra plugs as I broke first couple, my top holes were against the metal frame and they had to be cut very short not to stick out, the bottom ones worked perfectly from the first try!
Let us know if IND tells u about new solution!