You might currently be enjoying what you think are cheap driving lessons despite what I've said in different articles previously elsewhere on this website, but the driving instructor might have a nasty surprise for you when it comes to the time for you to take the test.
I have heard of instructors charging up to £150 when it comes to using their car for the practical dsa test, and since you have fully gotten used to the car, and with maybe just a week's notice before your appointed date with the examiner, you won't have much choice will you?
The reason usually given for the high charge is usually along the lines of needing a special insurance to cover you on the test, and incase you have an accident since the instructor won't be supervising you with the examiner in the car.
It just goes to show that what you thought was a good cheap driving lesson offer can come back to haunt you, and not to mention there is no guarantee you pass, so you might have to pay that hefty charge more than once!
At least you now know another reason why those affordable lessons might not be a good deal afterall especially if you started as a complete beginner have taken over 40 sessions, that £2 per lesson you thought you were saving just gets eaten up.