2 to 3k.

For BIG4 it depends on networking and luck. Because it is like trying to go into RJC without any varsity talent and a L1R5 of 20 points. Whats worse is actually getting appointed, because you will drain yourself so much and tether a bad reputation so harsh you will wish you had never entered through 'networking'.

Start in SMC or some start-ups. Build your reputation thereon. If you're good, 2 to 3 years later you will get headhunted. Good luck.