The following is the lecturer pay scale from a certain poly, but it is old info that I dug out from my personal notes (6 years old):

L1 6650 * 290 - 8100
L2A 6330 * 285 - 6900
L2 5065 * 285 - 6490
L3 4260 * 230 - 5640
L4 3425 * 190 - 4755
L5A 2680 * 165 - 4165
L5 2000 * 160 - 2760

For each L level, the first number is the minimum basic pay, the second number is the yearly increment quantum, and the third the max basic.

I was at L4 and was getting close to 80k per year when bonuses were included. I also taught part-time at SIM University, getting about 10-20k per year. But again, this was 6 years ago.