remember you get what you pay.. pay a bit more for a quality course that will ensure you a pass at the interview
But how can you differentiate between a "high quality" type rating and a ordinary type rating when you have no experience in such decisions? So much depends on the candidate whether he has the drive to get into the books every night or be a slack-arse. It is said that Qantas in Melbourne charge you $51,000 AUD for a 737-800 type rating. On the other hand you may be able to get the same rating in Miami or elsewhere in USA for around $15,000. The Miami course is compressed into just over two weeks whereas the Qantas course could extend to six weeks depending on simulator availibility and not necessarily a better standard of instructor either. It is not until you get into the simulator that you find out for the first time the standard of the instructor. Some are screamers while others are professional.
A stretched out course doesn't necessarily mean a "high quality" course.