Appen/Yukon Exam

I know theres already a lot of related posts about this, but some of them didint have useful answers, or were one or two years ago (maybe a lot of things changed for better or worse) I have the exams starting in 2 days for a whole week with almost 200 pages of guidelines to study.

Im guessing the "is it worth it?" question depends on how much do you need the job (i've been unemployed for far too long and i really need something more than the usual audio recording gig from Appen and 0,15/0,05 cents per hit from UHRS).

Im fron Europe, Spain. I would like to know if someone from Europe or specifically Spain have experience with Yukon: How much they pay, how the work is? Its the flow of work enough to get at least 10/20 hours of work per week?

And final question: Is the exam too hard? Any tips would be much appreciate it. Thanks!