It's at the higher end for 90 minutes, but it's not crazy, imo. That said, and I'm no marketing genius, but I've always thought that pricing for massages (legit or not) should curve cheaper the longer the appointment. As in 30 mins - $60. 45 mins - $75. 60 mins - $90, 90 minutes - $120. As opposed to each extra 15 minutes is the same amount increased. Gives people a bit of an incentive to book longer appointments, meaning more guaranteed income for the provider, and less time spent trying to fill in their schedule. Looking at her prices, it's $60, $70, then jumps to $100. I don't see the incentive to book for an hour when it's $30 more than 45 minutes. But 45 minutes is only $10 more than 30. Just my 2 cents.
Time is money, but I'm sure it winds up in the providers favour when they take a little bit less for a longer appointment, as opposed to having more scheduling gaps to fill and no income.