It took me seven hours, working steadily, to do book orders for four courses and make a poster for one. I have taught all of these courses before, so I had a head start. But I also had some decisions to make, as I wanted to choose books that would really work. Then one must always investigate availability and prices of different editions.
I was not being slow, but seven hours seems like quite a long time. Let us see: perhaps I averaged 1.5 hours per course, and took an hour on the poster. One course was easy. Two just have a lot of books in foreign languages, so it was a question of finding out which I could currently get and where.
One is a heart rending intermediate language course and I even read up on some SLA theory and pedagogy, thought about possible freshman textbooks, and ran seriously through past experience in my effort to decide what to do. I am still not sure my plan will work, but I think I struck a good balance between overthinking it and not thinking it through enough.
So, how long would these jobs take you?