When I did this I paid half up front and went to the USA for the flight instruction, hour building and then Bristol GS course.
So a FAA PPL, (as you only need this) can be done for £3995.00
Plus £800 for extras, just in case and test money.
Hour building 100 hours in a C172 £7570.00
Bristol Ground school course. £2100.00
So total £14465.00
Multiflights course is £33000.00 so half is £16500.00
So you paid £14465 and still haven't got an IR or ME rating???
AFAIK Multi gives you the lot... obviously plus tax etc as previously mentioned.
...and test fees, and medical, and flights to/from the US which you'll be also end up forking out for.