I have booked a Chichen Itza private tour on September 23rd for my sister and I with Carlos. We are open to sharing our trip with others to lower costs. If anyone is interested, please let me know here or via private message.
We are planning a pick up in Playa del Carmen and drop off in Cancun at the end of the day. I can share specific details of the day for those interested.
Also, if you want to be dropped off in Playa del Carmen at the end of the day, that can be arranged. He may charge a small fee for your extra stop, however, splitting the main tour charge with a few others definitely brings down overall costs quite a bit!