Hi there, I'd have to see pics to back up my opinion but I think you are going to seriously degrade the value of your bike by repainting it. Should you ever choose to sell it, it will fetch much more with the original paint ESPECIALLY if there is no rust or other issues. I would never re-paint my Cinelli. in any case maybe your definition of not that good is different than mine, so pics would help. Oh yeah, to answer your question a basic one colour repaint at a good painter will cost about $300 in my neck of the woods, plus replacement decals and application, say $100, so $400 total.