About the same on all the sites I could find a JJ for sale, but the JJ doesn't have solid state cells which do add to the cost. Don't get me wrong, the JJ is one heck of a machine but once you go solid state you won't go back. There is also a LOT more going on under the hood of the Poseidon that most folks aren't aware of, blame poor marketing for that I guess. As far as tech to keep you alive and compensate for human error there are no machines quite like it. Of course, that's a downside to many folks and that's perfectly fine.Yikes, that's more than a dive-ready JJ.