are you interested in the bike
may be
okay all the specs are in the discpition ill willing to negotiate a little 
perhaps I can pay you 3 dollars
are you serious are joking i'll give you the bike for $155
I will pay you 100 dollars
perhaps you might not make this deal $155 is a Great price
How about 133? 
i'm firm on $150 if you can't afford i'll have to pass 
I will pay you 133 and that is at.