My first time buying something on ebay

I know it's very common to buy stuff online, but I always have this phobia that the seller will take my money and run. But finally decided to go ahead with this one because it's selling much cheaper on UK ebay since pounds is weaker now so why not?

Thanks Sherin for helping me as I'm very noob at this and I don't even know what is paypal (ok, stop laughing)

He's always wanted the oakley red lens so I chose this one.

he's one happy boy :)