I'm glad you can return what you don't like. I love the marbled colors, but I don't like when they mix the colors all in a jumble (as in all the ones Joann's sells). My local quilt shop wont take anything back (not even if they talked me into buying it!). Did look and see if you liked the size/strips?
That's one thing about my local quilt store, they have small quilts on the walls showing exactly what fabrics are in the jelly roll, and what they look like together. Good thing to or I'd make the same mistakes, the rolls look the same! Sorry you were disappointed.