I want to buy this but not sure if its real

[prelude2.2]

Hi guys, I know very little about Rolex but I've always wanted one and to be honest this cheap one has caught my eye. I know its rough around the edges and probably has a repo dial but for the money it suits me perfect and I like it. But as I said I know nothing about Rolex. Do you guys see anything that's not right or is it a knock off? I tried searching the forum for a 6549 oyster perpetual but found nothing so it makes me worried. Anyway, all help is really appreciated, thanks.