To check whether a site is legit usually, I do follow a simple checklist to see how well they do.

1) Use WhoisXY.com to check the whois information and check whether the contact information matches with the one in the website.
2) In the domain contact details, is there a valid email address.
3) Is there a valid phone number visible, and does it work ?
4) Go through review about them using Unmaskparasites.com and check whether they are scam free.
5) Does the site have a current SSL certificate?

I followed the above steps for Goldstar.com and found that they are very safe and scam free.