Hey guys, i was checking out craigslist for bikes and came across this. you think its worth 900? or is this guy just making numbers up? http://westernmass.craigslist.org/bik/836398764.html

also: is there any way to tell what a frame is made of just by looking at it? like the welds or anything?
and how can i find out the model of my bike if i have the serial number. Do i look it up online?
and by the way can these posts be erased?