I bought the Groupon for a $7 eyebrow threading. I've never done it before, but at that price I knew I had to try it. The shop itself is tiny. It is filled with beautiful bags and jewelry. The threading itself was very quick. After it was over, I was extremely pleased that she was able to tame my unruly eyebrows.
On the down side, I wished for friendlier service. The owner (she never told me her name) didn't talk to me about how I wanted my brows to look. In fact, she didn't really say much to me at all. That being said, I'm so pleased with the result of my eyebrows that I might be back.
Also, since it's along Mill Ave., do know that parking will be a hassle.