Sketchy Worth it?

M1 here, getting ready to start biochem and associated classes. Already have Pathoma but is Sketchy worth buying? 250 for 12 months seems a little high, especially since I would not be taking step until June of 2019 so I would have to purchase another subscription. Should I wait until I get more into system blocks?
Source: Student Doctor Network - Category: Universities & Medical Training Authors: Source Type: forums