i have said it before and i will say it again and again and again and again. price is absolutely, positively, unequivocally NOT a reliable indicator of quality.
shop carefully. if you see a fabric you like, check several online sources before deciding where to buy it. you will be amazed to see how much the prices will vary between sources for the same fabrics - by as much as $4 or $5 per yard!
use what you like and can afford. be willing to experiment. keep a journal to remind yourself which brands of fabrics you've liked and disliked. have a section for shops, too - both in-person and online.
i'm fond of Red Rooster, Moda, Wilmington and Windham. there are other good brands, too. those just happen to be my current favorites. there are also a few Walmart fabs i really enjoy working with.
over time you will develop your own personal preference for particular brands. you will also learn what to avoid.
it's a process. ignore the Quilt Police, go forth and enjoy, Grasshopper. ;-)