It's a lease so just a monthly payment. But the cost is about the same as a Focus ST3 would have been, though the list price of the Golf is about £5k more. An RS would have been about £200 a month more which is a bit extreme for me.
The problem I have is that, while the £29,995 list price of the Focus RS is very striking, by the time you've added the essential options, it's a £34k car. I'm sure it's a great car but there is no way I could justify the extra cost over the Golf. If you were to buy on finance, the cost of both cars is very similar, but on lease the Golf is much, much cheaper.