Looks like they already have ready stock in Singapore. I went to Funan’s Multimedia Integrated and could not find it, apparently they have not distributed it to the resellers yet. I really wish Apple would open a store here in Singapore, like what they did in Hong Kong.
As you are aware by now the MacBook Air does not come with an ethernet port because of its slim design, so if you need to use a LAN cable for MacBook Air, this adapter is your best and only bet. Call me old fashion but I still prefer to transfer files over LAN as it is the speed is much faster and more stable.