A reasonable price for a used Giant Halfway?
I've heard about a used Giant Halfway for sale. Took it for a quick spin and it seemed to ride well (albeit a tiny bit creaky) and it shifted easily. The brakes didn't grab very well, but I figure that some adjustments and some new brake shoes could fix that. I didn't scrutinize the bike but I didn't see much of anything in the way of obvious blemishes other than a ding or two on a fender. It seems to be in good shape otherwise. It looks surprisingly clean for a used bike (the owner works in a bike shop and says he's moving on to a non-folding style of bike). It has the case that straps to the handlebars (and a rack trunk might be included).
What would be a reasonable price?
Also, how much on the Giant Halfway is proprietary? If I want to swap out the seat, let's say, will I be out of luck?
As I've never tried shopping for a used bike, what should I be sure to look for on it in order to make a good determination or to tell if it has a deal-breaker condition. (Think: blue-white smoke coming out of a used car's tailpipe means "walk away"). Any advice would be welcome.
Many thanks in advance,