Case files Vs first aid

[MarsRover]

Right now I am just studying using Uptodate and toronto notes. Our school does cumulative tests now, not block tests for clerkship. But I feel like I should be getting more to study from. Are case files worth the 300$ price tag to get internal, peds, obs, psych, family, ED? Is first aid better? I am not just studying for a block exam, so ideally resources that would also help with the LMCC would be helpful? I know some PDFs float around online, but for studying I find nothing beats physical copy. 

Is there a resource I am missing?