I've done a few of these shops... I find that if I do a few simple things, the write-up goes very easily... First, I GeoVerify my arrival and my departure. That way I don't even have to think about timings. Then, I actively engage myself in the transaction. This helps me to remember what the salesman says. Third, unless I really wan to, I don't do the test drive. Fourth, I make sure I get the business card. Fifth, when I get into my car to leave, I turn on the voice recorder, pretend like I am on the phone and say every detail I think I'm going to need.
I write up the shop as soon as I can - while its fresh. There are several narratives, but all they really want is a blow-by-blow account of what happened. I whip these out very quickly.
The write up takes 20-30 minutes. So, these things are 35-50 minute shops (total). Is $17, too low? Probably. I only tend to pick them up for over $20 and if they are super convenient. I've done a couple for over $50, which is a different story.
Hard work builds character and homework is good for your soul.