Are you sure that the rate from newbie to CPL will cost only 50k ?
Probably a little more as you have to factor in and endure the on going costs while you're flying. ASICs, License, Medicals, equipment, charts, books, CASA exams ..etc
It all adds up and it isn't cheap.
As for the actual training side of things, It really depends on you. Some smaller schools are very expensive but offer much better training than some of the larger schools. I know someone who did an instructor rating recently and spent less than 40k for his entire training, that was without an instrument rating though.