Chinese Makeup Finds Must Haves On Tiktok Compilation (links included) 

When you buy it internationally as in US prices from their storefront it's more expensive than buying it from Mainland China.

There are a few reasons for that: first, because it's a brand from overseas they will charge more in the global websites, then there's also the fact that it became really viral overseas. The shocking reality is that in China this brand is considered low quality, so when they noticed the hype it was receiving in the US they bumped up their prices.