Funny, I don't think that I've ever bought quilting fabric from a brick and mortar store. The last store we had in our area closed several years ago. Sad.
I love Connecting Threads for everyday stuff: connectingthreads.com.
If you are looking for some beautiful, organic, sustainable fabrics, try HoneybeGood:
https://www.honeybegood.com.
If you are looking for historical, American fabrics, (mostly upholstery, but some suitable for quilting,) try Brick House Fabrics:
https://www.brickhousefabrics.com.
If you're looking for fabric from far off lands, try Fabric Indulgence: FabricandArt.com.
Have fun!
~ C