Parting out the mods on my 2010 Prius IV... These bulbs were installed on my car for 10k miles and are in perfect condition. I purchased these directly from StealthAuto and they come with a lifetime replacement warranty. They were installed and removed using gloves to ensure they did not get fingerprints or oil on them. These are a very easy install (2 minutes for the rear and 15 minutes for the front). In my opinion, this simple mod makes a huge difference in the appearance of your car. You could change to LED's but then you need to splice in a load resistor and often times they are not very bright or are a funny shade of amber. I've used Stealth bulbs on 6 previous cars and never had a single failure. New these are $34 per pair (with shipping). Asking $25 shipped per pair or $45 for both.