Not much to it, the Bluetooth versions are currently $350 pretty much everywhere, this is the LTE version though. Samsung are releasing new smartwatches soon so expect prices to drop.
For any other questions Google is your friend.
Note: new Samsung watches will be out in few days with new OS. these watches will still be supported for next couple of years. so if ur looking for a decent batter this might be a options as i'm sure wear os watches will have less battery life.
Credit to price hipster