Back in March, following Sue Reno's lead, I decided to take the plunge and order some fabric from Spoonflower. These are the two fabric designs I ordered:
Overall I'm very pleased with the fabrics - the quality is good, and there's an impressive amount of detail. There was some banding, particularly on the top fabric, that probably only I would notice. I'm fairly certain this was a hiccup in the printing process, because there was no banding on other areas of the fabric with the same design elements and colors. For my purposes this wasn't a showstopper.
I ordered the fabrics on a whim, so did not order swatches to make sure the colors would be exactly as expected. I was OK knowing that this would result in some serendipity, but if you want your colors to match something you really should order a swatch.
Does this mean I'll stop printing fabric for my quilts on my own printer? No, but it's a nice alternative if I want yardage of a special design.