That's not a bad salary for an intern position, especially if there are bonuses involved. In a lot of industries, internships are unpaid or very poorly paid. Software development pays rather well, but I certainly didn't make that kind of money on summer jobs.
It was probably the same salary for the internship minus bonus's - the IBD interns here are all on 45k + 1k signing, grad is normally about 5k signing and a bonus guaranteed by HR at at least a set level.