I bought a Groupon for for a good price. I went in on a Saturday afternoon, which I knew would be busier.
I felt I needed a bit more interior cleaning. I negotiated a more thorough interior clean including the mats. This cost $30.00.
I waited an extremely long time. I understand that good work takes time, but an hour? I found that to be ridiculous.
However, once I got into my car, I was AMAZED at how clean my car was. Absolutely spotless. I have an older model car and like many folks nowadays, I practically live in my car. They did spectacular work.
So, if you have the time, it's worth the wait. But EXPECT to WAIT a long time. Especially on weekends.