I like the looks of them, but ...
they often (Clothworks, Windham) end up using 12 or more different fabrics from the same line, which becomes expensive, especially for a relatively new quilter who might make a mistake on the layout/cutting.
sometimes they are less about a real pattern than a way to show off the fabrics. (Clothworks)
The Kaufman patterns seem really substantial but I haven't tried them yet as I am not good enough to execute them!!
But yes, I think they have value as creative inspiration and I have downloaded the ones I like or hope to do one day. Stars before I die LOL