I hope your search for a less expensive replacement is successful!
We hadn't been in Houston a year when the louvers were ripped off of our car while we were on vacation. They had run over a neighbor's small tree getting away. The louvers were dealer-installed on what was then a 12-year-old car (this was a couple decades ago). Never found another set to replace them (they're very window-size-specific), and the sun through the backlight took no time at all to wreck the interior.
Still have the car, still can't find the correct louvers.
