I think the Galaxy S4 I bought is fake :(

Ebay Item

This is the Item i purchased. It was £389.99, ended up being 499 EUR for a 32 GB version? The seller is from the UK and I am from the Republic of Ireland, I thought the UK only had 16 GB versions?

I've already paid by paypal and contacted the seller with my concerns, how do I get a refund? Like do you think he might just refund me straight away? I sent him 3 messages about how I thought it was fake after paying.

Sigh I don't know how I was so stupid I guess I was just so excited.