Is farsali worth it?

Was thinking of splashing out (going to Paris as a school thing) and its basically teaching you how to speak to actual French people etc. etc...

Anyyyyway there miiiight be a sephora or something like that there (the uk don't have that so I'm excited af 😂) and ive seen the unicorn serum and the rose gold one (not so much the volcanic one idk why) on Instagram and was thinking what r ur personal experiences?