This Guardian article today tells you that NCT courses “can set you back by £400.”
NCT is, by the way, a charity. Not a profit-making enterprise. Surplus from courses goes into charitable work such as campaigning for better services and support for new parents, and providing that support, usually completely free of charge to parents, whether they are NCT members or not.
This page shows very transparently the hourly rates for NCT courses.
This page shows that NCT discounts courses by up to 90%.
None of these pages explain the level of training (minimum two years, currently a foundation degree), assessment and CPD that NCT Practitioners undertake, nor the fact that NCT Practitioners are specifically trained in facilitating adult learning (unlike most midwives). NCT courses don’t just transfer information into passive vessels, and most people come out with tools and strategies as well as knowledge. Oh, and the “bought friends,” of course.
If you’re spending that much money (or not), you might want to look into the qualifications and ethos of the organisation you are spending it with.