That kit is crazy expensive. I've used the $20 Sylvania kit on several cars over the years, and it works great! Used this kit on my MINI about 5 years ago, and the lights still look great. It's always parked outside in full sun. Just be sure to follow the directions to a 'T', and count on about 30-45 minutes of work on each light.
https://www.amazon.com/SYLVANIA-Head.../dp/B00429NKWK
Here's a before/after on my sister-in-law's Civic:

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2005 4.8is Black/Black (sold)
1990 325is Alpine White/Tan
2005 325i manual
2018 X3 M40i