I would give them a 3.5, I really wanted them to be amazing but I was pretty under-whelmed! I got the blueberry lavender Greek yogurt. Came to around 5.00 for a small. They top them with granola. They don't have a huge variety of choices but it is a small shop so that's understandable. The staff was nice enough and efficient.
I just felt like it wasn't anything special, I could make the same thing at home or buy it from the grocery store for half the price. I was expecting the toppings to be exceptional. They did put a generous amount though so that is good.
I doubt I will be back, it's just too expensive for what you're getting.