Thanks to Karin for pointing out this message on the website of niche line Institut Très Bien:

Like a beautiful ballet, Institut Très Bien has ended act one and is in intermission...

We would like to take opportunity to thank all of you who loved the brand [...] We hope to see you soon again.

Hopefully they'll be back. Meantime, if you need to stock up, the scents are marked down at Beautyhabit.