Thanks for the replies. I opened a dispute right after he sent me the message claiming to not have received anything, and he ignored all my messages. LBC staff asked me for a screencast showing that payment was sent and I provided it, after that they asked him to do the same in his acccount to show whether or not payment was actually received, and gave him a 12 hour deadline to do so... of course right before the deadline, I get this response:
"Hello, it turned out that it was a system skrill failure. Therefore, the payment was not displayed in the transaction. Now the problem is solved. I hope for your understanding, as well as apologize for such a long delay."
I don't believe a word of that; the jackass clearly thought it would be easier to scam than it turned out to be. What an idiot.
Considering that the issue was resolved and you receive your bitcoin from the seller already, I guess you should stay away from that seller now if you ever want to buy again in localbitcoins though also leave an honest feedback with his scam attempt so people will be aware of that.