Slopes,
let's forget the fact that you think £609 is the cheapest flight from UK-USA and that you have added on 5 hours for some reason and that you work in a job where you get less than 3 weeks holiday a year. Why are you (and others) adding on food and drink? Are you intending to fast for the duration of your PPL in the UK?
To answer your specific questions:
1) The R/T verbal is a separate exam and is included.
2) You need a FAA student medical (included) for your training and a CAA class 2 (not included) for license issue. Although as the CAA medical and license costs are identical for whatever method of training you choose, I did not include them.
PS A mate of mine on my course was from Aberdeen. He now has around 200 hours but hasn't been near Aberdeen airport in his life due to their high costs.