I just bout this last week for $545. Went to see about getting another one and found the price dropped $96. Fortunately Amazon refunded the difference but if you are in the market for a seascooter this one has been great the two weeks we've been using it, almost daily.
Be sure to check the reviews. I havent had any water issues, the throttle and safefy are flimsy but I feel its partially by design as it works fine and wont easily snap off. Recharging is relatively easy too, I haven't needed to use the pump yet to get the cover off. I make sure to use silicone grease every time and no water has seeped in.
The kids love it too. Im glad we didn't get the less powerful model. Our 6 year old has no problem with this thing and can lift it out of the water if needed to. We mostly use it in shallow water and snorkeling, I've only gone down about 15 feet with it. Battery lasts about an hour. We top it off each night.