The demand for the S400 has been absolutely unreal! Every time we get them in stock, they sell out. The bad news is that they are now completely sold out. The good news is that more are on the way! The bad news is... that stock won't get here until June. So lets turn this lemon into lemonade. If you're patient enough to wait until June for your S400's, we'll reward you by providing you with a discount for your time.