Few months back, like you I was seaching for the SB400 in all the known photo shops from SLS to Peninsula to Funan to AMK to Orchard Rd etc but this model has been discontinued & all the shops do not hold stock. I then got a preowned unit from B&S. Last time I was at TCW 1-2 month back, if I am not mistaken, I saw quite a lot of stocks of this flash in the glass cabinet. You may want to check with them. Good luck!