Good deal, overall. I did feel like I was treated differently as a Groupon customer. All appointments were rushed, and he only wanted to see me in the beginning and end of the Invisalign treatment. It is my understanding that Invisalign clients usually see their dentist every 2-4 weeks during treatment. He just gave me all the trays and sent me on my way. One great thing about it, though, is that he always sent me gift certificates for holidays, so when it came to the end and I needed to get a permanent retainer (around$250), I was able to get it for free with my gift certificates. And I now have a perfectly straight smile!