They are not making exactly the same thing. That might be their marketing claim, but it is false. Unles they somehow discovered a way to do cheap low-volume synthesis of arbitrary organic molecules, which alone would probably get them a Nobel or two, and the analysis claim is also only loosely based on reality.

The only reason perfume manufacturers are willing to pay more than gold price (in weight) for some ingredients is exactly that they can't be economically synthesized.

Where can such clone houses be found? Market research with a search engine is impossible these days.

There are tons of Youtube channels and Reddit threads dedicated to clones. My protocol is, if the originals sell at outrageous prices, I go for clones. They are good enough for me.

I was able to find some local ones here in Melbourne, Australia with a simple Google search.