The best way to get something you really want on CL is to make an offer in person with cash in hand. Never make an offer on the phone or via email. Ask to look at a bike. Go. When there make an offer if you want it. 99% of the sellers would go for the bird in hand rather than the ones that might fly... '

If you get the wrong vibes from a seller (including not letting you see the item in question without making an offer), ignore him/her and let it go.

Simple and no reason to get worked up about it...