So, my bike works fine but I was wondering if there will be any future problems from my chain and wheel screws accumulating rust. Those are the only areas that I noticeably see any visible rust.

Are other areas of my bike also getting rusty (even the non visible areas of rust)?

How much would a bike chain cost to replace?

I have a Bianchi Pista Chrome Lite that is 21.5" Inches if that helps.

Thanks,

(pics below)