About international shipping and online shopping?

So i ordered an iphone case on hitcolor via shopify.com. The user was from China. It was through paypal, but i'm still worried about credit card fraud, or if i won't get my case. I need it by may 27, and i ordered it today.has anyone ever ordered from china, and know when it will get here? Also, in Chinese currency it was $20 and i guess in US currency that is $3.so how much will i get charged? I haven't ordered internationally much, so i just don't want it to go bad.

You shouldn't have to worry about credit card fraud (the seller doesn't see your credit card info, only your paypal account), and you will only be charged 3$ since paypal converts the currency. For when it gets here however, there's no real way of knowing.