Are essential oil sellers on Amazon lying?

I just realised that sandalwood essential oil is very expensive. Like $75 for 5 ml. However, on Amazon I see many brands selling sandalwood essential oil, advertised as 100% pure and natural, for as little as $12 for 100 ml. Other brands, $15 for 10ml. But if i see legit essential oil sellers private websites, i see minimum $150 for 10ml.

I dont understand the price difference. It must be that sellers on Amazon are lying. How can they make such white lie claims and still be able to legally survive?