I have seen many complex questions related to billing & invoicing, FI-CA post items, Customer Service and creating master data. This site made me solve any complex question asked in exam. I request to all SAP aspirants to go with practice questions with erpprep.com and make it 100% clear. I can not imagine my result without having mock test with this site.
Make a serious decision and go with the flow, you can also score better like me as I have achieved 90%.