I have had the Magsafe Duo for about a week, and here is my take on the matter.
I like the design of the Duo. I like the popup puck for the Apple Watch because I have the one piece band and having it in nightstand mode works well for me.
I also like the positive feedback of the magnets of the phone charger side. It is nice to know when I have the phone in the correct place for charging.
I find it puzzling that the connection is a lighting connector, not a USB-C type connector. My preference would have been USB-C, but I am not the design engineer.
I have had issues with the Duo lifting when I try to pick up my phone, but I figured out that if I place a finger or thumb on the Duo between the chargers and then lift, the charger will stay down and not try to follow the phone.
Overall, even at the price, I still like the Duo and it works well for my workflow. If I need to travel, it will be nice to have that for my phone and watch, and not take up a lot of room. I had a spare 30W USB-C charger, so I didn't mind that a charger was not included with Duo.
So yes, the price is high, but I didn't mind. It works very well charging both my phone and my watch.