I've absolutely no idea about the quality of their oils, but one thing I can tell you is that the diffuser they sell for $40 and claim to be discounting is an extremely popular China-made model that sells for $5 to $6 on Alibaba (complete with "Your Brand" customisation). There's dozens of similar ones on Amazon, all cheaper than the Cliganic one.
That doesn't suggest that the oils are fake, but does suggest that they overprice for an "organic" tag.
Amazon example (I didn't search much, but I know I've seen a lot of this design on my local Amazon-equivalent, which is what got me searching in the first place)
https://www.amazon.com/GX-Diffuser-Essential-Compatible-Humidifier-Atmosphere/dp/B01N3LIPCN
Alibaba link, confirming the source