Uber analytics test v 3.1- People Analytics Business Partner

Did anyone take Uber analytics test v 3.1? my research - 32 questions: 26 excel stuff(heard you need to have advanced excel skills) 2 business modeling questions 4 short essays. is it worth to buy prep material online - price ranges from $15 to $50!! Can someone please give inputs on what to expect for this test? role: People Analytics Business Partner Current TC: 125K