6 repeats is not just 6 repeats... :wink:
Not only does it depend on how far apart the repeats are, but how big do you want the quilt to be?
I can get 6 repeats out of 1-2 yards of fabric, but remember you are cutting "lots" of small pieces, and there are "lots of seams" so this yardage can shrink very fast :D:D:D