Speaking as somebody that has tested many sites and sellers enough to know what is legit, I've come to a conclusion.
There is no point buying from websites anymore, most of them take days to deliver the coins now that the webapp is basically permanently down. So the best place to go is eBay.

I personally prefer ign because he always seems to deliver quickly and is almost always the cheapest.
Also with eBay,sellers with good feedback care more about their feedback than coins so are very very unlikely to scam you.
Honestly in terms of FIFA coins, eBay is your friend, just find a seller with good feedback (95%+ positive)

-wilkes-

I am not aware about that site.
If you want to know if a company is legitimate,you should keep in mind the following instructions
1.Use Whois lookup tool like [ Register or Signin to view external links. ] http://www.whoisxy.com/ to check the whois information.Because legitimate company properly update whois database.
2.Then check whether domain owner contact details and E-mail address is currently active or not.
3.Finally take some reviews about that company using Scamadviser.com,Webutation.net.
I am sure above the steps are very useful to check any company is legit or scam.I hope it will be very useful to you

if your looking to buy still try ufifa.com. Theyve been great every time ive used them!