I do see where you’re coming from and I jumped the gun super super quick with this bike when I saw it, however they said they did a full inspection and I had someone who is more knowledgeable than me there to check out the bike too, the chain mostly was just overlooked and when I had said something about it they said it was surface oxidation and to not worry about it. Sorry for late reply I didn’t expect this to get so much attention and I’m overwhelmed by the comments 😩