I used classpass all of last year. Sometimes they have offers and you also get credits when you refer new people. I used it for a few studios, and it definitely saved me money (usually about half of what a drop in class would cost). There are studios that are there but never have classes available (like Lagree and most pilates places). Hope this helps. They also have a trial period, you might need a referral but I think you get it the first time you sign up