Bro, it's actually not that hard, you just gotta look at the description on Facebook and just see if it has anywhere to error and then if they don't really put a description just actually go look at it and if you started up or if they don't want you to start it and always check the serial number before you buy it because one of my friends he bought a bike and it was up here. Apparently stolen. So yeah, just be careful of that.