Yes... the replacement parts are not inexpensive.
Why didn't the manufacturer put a few more hours into the fit and finish of the part?
It's noble that he's providing them for just the cost of shipping, but I wouldn't install them in my car... and certainly not in such a top-down visible spot. Not unless further they were refined (sanded/painted) and less taxing to fold down. I'd pay ~$30 each... assuming they presented "polished".
Maybe if they weren't made out of sugar they might hold up.
I don't use mine... so the double-sided tape works just fine. For now.
However, if the parts in the vid better matched the original... I'd buy a pair.
Thanks for another awesome vid.