In Canada you only need 100 hours for a Commercial Helicopter Licence (thats total time, not an add-on to a private, or plank conversion)
I was lucky...it took me 61 days to complete my training and i started work on day number 62. Managed about 250 revenue hours that summer and was at about 1,130 hours by 18 months.
Had some very lucky breaks in the first 3 years