500£ and the display engine (supposedly must be new)ALREADY has corrosion on it. oh no..Can anyone else see it? What's your views on it?

https://www.chinesemotorcyclepartsonline.co.uk/partno_ENG094#image0 The corrosion & paint loss is near the front of the left casing piece near the cylinder... I have this exact same engine on my bike and if I'm very honest the company making this are wasting their money by making it because it's not very good. A regular manufacturer like yamaha I don't think spends more than £300 per engine unit they use and their engines are great, it's the £25k they spend on design which is what pays in the end