[Mike_Outlook]

just do what I do,look at the whole job ,then decide what YOU want for doing it taking into account your effort involved,and not deliberately ripping anyone off.Quote that price,and if they say no,either ask them how much THEY would want for doing it,or just walk away from it.
     At the end of the day,it depends whether you can afford to loose it or not,if you can,be fair but firm.