Buy Aerox 70ccm or not???

Hello everyone, I’m new here and I have a question right away And I might have to buy an Aerox. So the scooter is only 1km away from me. It was built in 2010 about 15000km. It’s pretty much made up!! It has a Streetrace 70ccm built in. Furthermore, other clutch Vario and so small things changed on the optics like a double optics etc. So he should run quite well papers he also has Drosselung but I don’t know. I also think he has many verses Now my question I actually wanted to convert it back to original, but isn’t the engine completely “sucked out”? I wanted to install new crankshaft bearings then. He only has a larger nozzle in the carburettor so he doesn’t turn so high and thus he doesn’t cover up so high? What do you think I could buy the scooter or rather leave my fingers off? He’s pretty cheap but what would you pay for? Mfg.