This is definitely something I wouldn't have expected to find in central Illinois at all. Coming from Los Angeles, this is more of the average yogurt place to me. The yogurt here isn't as rich and creamy as those offered by Red Mango and Pinkberry that are big in LA. Of course, Cocomero has more choices of flavor and charges by the ounce. You don't have to fill up the entire cup unless you can actually eat that much yogurt :O more power to you.
If you're here in Illinois and curious as to what high quality yogurt tastes like, I recommend trying Red Mango in Chicago. They also have a few locations in the suburbs. You might not think of cocomero the same way afterwords.
If you happen to like the cocomero style with a variety of flavors and happen to be in LA for whatever reason, I definitely recommend Nubi Yogurt in LA. Same style as Cocomero: self-serve, lots of flavors, charge by the ounce.
Of course being from LA and having enjoyed Pinkberry and Red mango, I might be pretty biased against Cocomero :)