I paid $60 for this tour.
What mainly drew me to this is that it leaves 1 hr earlier than other tours and visits Hierve el Agua first. this ended up not being an important pro - at least the day I went - because a group of us did the hike around for an hour and came back, and the pools were still not too crowded.
Another potential benefit I saw was that this tour says that entry fees (20 MXN for road use, 50 MXN for entrance) and lunch are included, but this too turned out not to be a pro, since they are not included. this information was added by Viator and not the company, so the group of us had some issues to figure out on the trip. The company reps were very sweet though and - after some messaging back and forth and pushback from me - explained this to me and offered me reimbursement for the entrance fees and lunch and said they would take it up with Viator.
Compared to many other tours that stop by the tule tree, a mezcal facility, and mitla, this tour is of a comparable price but much less packed.
It also says a guide is included, but it is not. This is what the trip looked like for me:
The night before, you get confirmation of what time your pick up will be with the information about the driver.
The morning of, you get picked up in a Mercedez Benz van along with other folks. The driver says nothing except a high level overview of the trip timeline. He drops you off at the entrance of Hierve el Agua and tells you that there are guides for hire (free, but expecting tip) and to meet him back at the entrance in two hours. Then you stop by Teotitlan del Valle for a speedy tour, so if you don't buy anything you will be there for 15 minutes at most, and the driver translates the tour in english for you if need be.
Effectively all they provided was transportation to hierve el agua, transportation to Teotitlan del Valle, which is right on the way, and transportation back. If you aren't set on visiting Hierve el Agua earlier than some of the crowds, consider taking another tour that has more stops for roughly the same price. If transportation is all you need, consider El Andador tour company with a physical location in the city two blocks from the Zocalo. They aren't _really_ a tour company or well reviewed, but they only claim to provide the transportation to and from places. I don't think they would pick you up in a Benz though. Their tour for Hierve El Agua includes stops at Tule, a Mezcal factory, and Mitla and costs 250 MXN. Thats $14 with the current conversion rates.