I've bought fabric and not had problems with them.
On the other hand, I've bought squares and had some bad luck with them being so out of square it wasn't funny. On one lady, she apologized and said her niece had been helping and it appears she didn't understand about how important squareness was...she replaced them. Another lady replaced them with the wrong squares (twice) and I finally gave up with her...was getting too frustrated with her.
So I won't buy squares again but will buy specialty prints if I "love them".