There was last week when I bought my ticket...I haven't checked since I purchased. The fare for Turista was 839 ARS (I'm a resident, for others that may not be citizens or residents, that price will be 30% higher and they do check your ID when you check in at the counter at the port); they were offering Business Class (Clase Primera) for the same price as Turista which would be the only reason I paid for it.
I was told to always buy the Flexible ticket in case of missing my boat for any unforeseen reason. Turista is the lowest priced flexible ticket for this boat.
I believe the price rises as the seats fill since the same ticket for tomorrow was going for $1100 last week and that is the last day to return after this holiday weekend. Today, Clase Primera was maybe only 25% of capacity.