I just checked again, if I buy from BookIt, it will be $36 for each roundtrip ticket, $72 total for both of us to get TO and FROM the airport.
Any idea if it's cheaper if we purchase at the airport?
As mentioned, we are staying at Sunscape Sabor so it's a bit of a ride.
I have stayed at Sunscape. I am 99% sure that it is less expensive to buy your tickets at the airport rather than online. Just go to the little booth that is to the right when you exit customs (go towards the bathrooms). The prices are listed and they take US$ and give change in MX$. At the end of your trip, you'll take a taxi from Sabor to the airport, which I am also quite sure is less than the online price. There are taxis lined up outside the resort all of the time that will be hailed for you by the hotel employees.