They are comfortable, easy to make and reasonably inexpensive!
What I didn't expect was the multitude of sewists who were interested in learning how to make their own! I've had messages from lots of woman who'd like to make these! So I'm in the midst of drafting a free comprehensive tutorial that shows you not only how to draft your own pattern but also how to make a blouse like this. I'm hoping to complete the first draft tomorrow and release the tutorial within the next week or so... Stay tuned!