When I first started quilting I was not picky but I have had several experiences where material I bought on sale was flawed and did not hold up. I also bought some cheap material that stretched and was hard to work with so I am a little more picky than I use to be. I am sewing by hand so I want my material to be easy to sew on. I have stupidly bought material that was too heavy and hard to work with. I guess everyone has to decide for them selves but I want my things I make to be usable and hold up to washings and they do if I use good quality matrial.