$200
We bought ~2 years ago. Used only a couple of times. Still have the box and all the accessories (see picture). The adhesive on the mount is not peeled/used.
Happy to sell for $180 if you don't need the card.
Product page for the specs (the non-pro version): https://www.insta360.com/product/insta360-ace-pro
290 Jane Stanford Way, Stanford, CA 94305, USA
0.6 km from Stanford University