To find a site is legit or not, you can do some methods. You can check whois lookup for a domain name. Visit the site WhoisXY.com
here you can check whois information for domain name. If the information is public and looks legit,you can note the email id, contact number of the domain name owner or administrative or technical department or else sale department. It will help you to contact them if you have any problem after using their services or buying their products. Then you can visit the site ScamAdviser.com
check whether the site is trusted or not. If the result will "High Trust Rating. This Site Looks Safe To use." It is good site. Then you can visit Webutation.info here you can read users or customers reviews, ratings and feed backs about the site and their services. If they said good, you can start using the site.