i think a good way to estimate any size quilt is to add up the number of yards required from your pattern/book..say a total of 6 yds...then decide what you paid for your fabric..cheap like garage sales..or maybe joanns or real expensive like lqs...so lets say inbetween like joanns at $6.00 a yard...so times 6 x 6yds..so now you are at 36.00..then add cost of your thread,batting and backing..so lets say 3.00 for thread,15.00 for batting and 4 more yards for backing at 6.00..so 36.00 plus above prices..approximately 78.00 for materials..now there is your time which includes quilting and binding..so there you are and of course the larger the quilt..the bigger the cost..