hey PinkNeuron,
150h DOES sound a lot, for 8k. Is it really 150 contact hours? Or rather, 150h of paid work which sums up to 8k, but this for example made up out of 25 class teaching hours, 25 office hours, 75 hours for preparation, and 25 hours for essay marking?
if you've actually got to teach 150 hours, i wouldn't do it. if you split that on 3 terms of 10 weeks, that's 5 hours a week - assuming that you need about 3 hours of preparation per one hour of teaching, that would make 20 hours of work already, and then there might be other duties such as office hours and essay marking...
if on the other hand you get 8k for teaching a class of 1h/week during 2 terms and a bit, plus preparation/office hour/marking, then that is well paid, i would say. i will also be teaching, 2h/week, for 23 weeks , plus the other duties, and will get less than half of 8k.