Yes, but I suppose you have the safety of Amazon returns, it says returnable within 30 days, and you can buy transparent UV protector that you paint on, it is not expensive. It was not the only listing for the same item:
SZELL Car Front Headlights For Toyota For Alphard AH10 2002 2003 2004 2005 2006 2007 Car Front Headlamp Transparent Lampshade Front Headlight Cover (Color : Left and Right) : Amazon.co.uk: Automotive
This one was a little more expensive, used exactly the same stock photos but doesn't appear to be the same supplier.
I can't see this item on Aliexpress at all. My guess is they are 'new, old stock' and no longer in production. The item probably sold as an aftermarket by China to Japan in meaningful quantities some years ago. Present volume means larger suppliers generally don't have them and just a few select suppliers do.
If my professional polish doesn't work out then I am going to take the risk but it would be nice to know if any fitters here that think from the pictures it could be fitted. It would probably have to have a new flexible seal put around it.