leoyh said:
^ they probably take like 5 cadets, if not less, so i guess they can afford to pay more. i would assume that would be the trend in the much smaller firms
I'm more inclined to think it's because they need to attract and retain staff because the Big4 lure is very strong in terms of better training opportunities, wider (and ore reputable) client exposure, more social events/larger social budget, future job prospects within the firm and associated salaries, as well as future job prospects based on the firm's reputation (i.e. outside of professional services), etc...
That being said, the value preposition offered by a mid-tier firm is still also quite good especially if you are able to balance work and studies effectively (i.e. get good marks) because you get work experience on your CV which will help in job-hunting as a grad (as well as help future potential employers overlook slightly less than superior marks), and a far better than average salary considering your age.