He was being sarcastic in other words he was joking. Use C-Cex at your own risk, read more about them in scam accusations, just use the search bar and type any exchange's name, you'd find what all scammy shit they have done.
https://bitcointalk.org/index.php?topic=418700.2920 traders there are complaining.
Old scam accusation
C-CEX.COM SCAM
I'm a big fan of localbitcoins as well.
[....]
I'd recommend it to you without a doubt.
+1 to Localbitcoins
Localbitcoins do not look like trading.