In reply to
My sister did a week of solid driving then sat the test at the end of it.
She says was best money she ever spent
I did too, and agree.
Learning the traditional way is the waste of time unless you are an already semi proficient driver, the costs are comparable, and you haven't got to try and remember what you learnt in the previous weeks lesson.
The one I did (although a few years ago!) was £250 with a test on the friday with a guaranteed pass - which meant, if I failed the exam, i had free lessons until I passed. I was ready to pass my test after 2 days (you drive about 8 hours a day), and as soon as i did pass, my instructor took me out on the motorway for a few hours which was invaluable.
Im convinced it made me a better driver.