In Sydney, almost everything costs more than in Singapore, except coffee and this HiRise dock. I bought the Twelve South HiRise for iPhone 5 & iPad Mini at the Apple Store Sydney for AU$34.95, versus S$49 online.
Twelve South announced the PlugBug World early this year, and I'm baffled it isn't sold in Singapore, not even on the Apple Online Store. So when Li Xiang visited Hong Kong, she bought it for me for HK$348, about S$60.
I bought the Twelve South HiRise for iMac at Hysan Place Apple Store in Causeway Bay, Hong Kong, for HK$618, about S$99. I couldn't find it in Singapore, not on Apple's stores, so your best bet is Twelve South's website.
I bought the Twelve South BackPack 2 at the Hysan Place Apple Store in Causeway Bay, Hong Kong, for HK$268, about S$43. In Singapore it's S$55 at EpiCentre and S$49 on the Apple Online Store. It fits the iMac 27-inch.
The Twelve South BookArc, at S$65, was my second birthday present from Li Xiang. It holds the MacBook Air upright, freeing desk space when you're not using its screen as a secondary monitor, with a gap for the power cable.
Li Xiang gave me two presents this year, plus a short birthday trip to Malaysia. The Twelve South MagicWand, at S$45, was the first, and the BookArc, at S$65, the second. The MagicWand holds the Apple Wireless Keyboard.
I bought the Twelve South PlugBug Charger at the Apple Store in Fashion Show Mall, Las Vegas, for US$34.95, or US$37.78 after tax. It acts as a US travel adapter for your MacBook's MagSafe adapter, plus an extra USB port.