MBK = Mah Boon Krong (that's how you pronounce it, dunno if that's how you spell it, haha).
Anyway, its along the BTS line (Thai version of MRT), you can alight at the National Stadium station, got link bridge into MBK.
That shop I mentioned quite widely patronised, always a lot of pple, but suggest you check out the prices here in S'pore first, then go there and compare...