The Apple iPhone Micro USB Adapter  is currently only being sold in the UK Apple Stores (both online and retail) for £8.00 (S$16.23).
I bought it from the Apple Store at Regent Street when I was there in London for Nokia World 2011. I think it is a good gift to give to people who are Apple fans because you can’t get it anywhere else in the world!
Apple iPhone Micro USB Adapter
Apple iPhone Micro USB Adapter On iPhone 4S